pro stock motorcycle horsepower

A stock Victory 106 cubic inch engine puts out around 88 horsepower and 106 lb-ft of torque. Many racers have suggested NHRA allow pneumatic valve springs, similar to those in Formula 1, to help reduce costs. The DRCE4 has provisions for nine cam bearings and support cam cores up to 80mm. Teams ran the Chevy 427 Mk IV, Ford Boss 429 or 427 SOHC and the Chrysler 426 Hemi in lightweight ponycars and even compacts like the Chevy Vega and Ford Pinto. It didnt stop with manifold design and packaging the rotating assembly. Such a move would cut down on carburetor development costs and open up intake manifold design. Oil from the main galley to the lifters on the DRCE4 is controlled with a billet plate mounted in the rear of the block, similar to NASCAR designs. Angelle Sampey tops Karen Stoffer in Pro Stock Motorcycle thriller at Bristol. The higher the lift at the lobe, then smaller ratio rocker arms are required to achieve the massive lifts that are used today. $7,199.99. 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In eliminations Salinas ran close, Vance & Hines Eddie Krawiec won for the first time in 2021 in Pro Stock Motorcycle, and it came through at the biggest event of the season, the prestigious 67th annual Dodge//SRT NHRA U.S. Nationals at Lucas Oil Raceway at, Matt Smith continued to stay a step ahead of everyone in Pro Stock Motorcycle, picking up his fourth win this season on his Denso Auto Parts/Stockseth/Matt Smith Racing EBR after a pass of 6.828 at 199.52 in the final round, Class veteran Karen Stoffer capped off a resurgent weekend in Pro Stock Motorcycle, winning for the first time since 2019 by taking out Andrew Hines in the final round with a run of 6.798 at 197.36 on her Ray Skillman/Big, In Pro Stock Motorcycle, Smith capped off a completely dominant weekend on Thunder Mountain by going 7.118 at 189.04 on his Denso Auto Parts/Stockseth/Matt Smith Racing EBR to beat Eddie Krawiec in the final round win on Sunday at the, Not many racers are as eager to test their abilities at challenging Bandimere Speedway more than six-time world champion Andrew Hines. The second half of the six-race, Its great news for Matt Smith racing and bad news for the rest of the NHRA Pro Stock Motorcycle class the five-time and defending class champion is apparently peaking at the right time. Matt Smith impressed in Gainesville last year en route to the world title and, Steamfitters UA Local #602, located in the Washington, DC Metropolitan area, renew their partnership for the fourth c onsecutive season with husband-and-wife pro stock motorcycle team, Chris and Kelly Clontz ahead of the 2021 NHRA Camping World Series season opener, It was announced this week that Harley Davidson will no longer field factory teams in American Flat Track and Drag Racing. It was a necessary component for the future.. 1 spot for the second straight race, going 6.736 at 201.16 on, Just last month Joey Gladstone was recovering from a high speed testing crash at Darlington Dragway. $9,999.99 $10,499.99. We dont have to be quite as sophisticated in a lot of ways. Pro Stock teams are extremely protective of their setups and go to great lengths to keep the engine away from prying eyes. This cookie is set by GDPR Cookie Consent plugin. 2 of eliminations to collecting his second career NHRA Camping World Drag Racing Series victory Sunday at the DENSO Spark Plugs NHRA Four-Wide Nationals at The Strip, Matt and Angie Smith know how to step up at their sponsors race , powering to the No. Others will also run the new LS order that adds a 2-3 swap; that is, 1-8-7-2-6-5-4-3. How Much Power Do Pro Motocross Bikes Make, How Much Power Do Pro 450 Dirt Bikes Make, Quick Answer: How Many Power Cycles Macbook Pro Battery, Question: How To Check Power Cycles On Macbook Pro. But it will take, Multi-time NHRA world champion Eddie Krawiec picked up his first victory in more than two years, powering to the win in a thrilling side-by-side duel with Ryan Oehler in the final round of Sundays 33rd annual Mopar Express Lane NHRA, Looking for a Texas sweep, Pro Stock Motorcycle points leader Matt Smith made the quickest run on Saturday, powering to the No. The three-time champion followed it up with a historic, Matt Smith is the defending Pro Stock Motorcycle world champion and he won in Gainesville last September, which helped spur his run to a fourth world title on his Denso/Stockseth/MSR EBR. Bob Glidden was forced to drop his winning Cleveland engine program in 1982 when NHRA mandated 500ci and start a new R&D effort with the Boss 429 platform. The rider sits in a little notch above the engine no padding stretches out on his stomach, essentially laying prone, chin a few inches from the top of the engine. There is no traditional front cover bolt pattern as the cam is held in place with a Jesel cartridge-style cover that keeps oil off the belt drive. This launch is a proud moment for Vance & Hines and hopefully will net many victories for our Suzuki riders in 2021 and beyond.. Angelle Sampey Sets New Pro Stock Motorcycle Track Record at Pomona BREA, CA - November 14, 2022 - Displaying the speed that made it a championship contender throughout the season, the Vance & Hines/Mission Suzuki Pro Stock Motorcycle team brought down the curtain on the 2022 NHRA season with its seventh number-one qualifying performance of the year but was unable to advance past the . The group is owned by German automotive manufacturer Audi through its Italian subsidiary Lamborghini, which is in turn owned by the Volkswagen Group. Want to see how a 70mm DRCE camshaft compares to a big-block Chevy? All logos and images are reserved. How fast is a Pro Stock Motorcycle? Pro Stock Sometimes called factory hot rods, these vehicles must have engines and bodies from the same OEM and all of the components must be available to the public, and for the NHRA, engines are restricted to 500 ci. Looking for, The next victory for Pro Stock Motorcycle standout Eddie Krawiec would be a big one, as the four-time world champion is a win away from his 50th career victory. Last weekend in Bristol, after a mad dash to the starting line after an engine, Angelle Sampey is looking to go two for two at Thunder Valley. The $18,995 superbike, built by hand in the US, is the culmination of Buells decades of expertise. Stability of the cylinder, thats where all the power comes from, says Morgan. Compression rings are usually treated to titanium nitride coating. With many more, After winning the most recent race, this weekends NGK NTK NHRA Four-Wide Nationals at zMAX Dragway marks a chance for rising Pro Stock Motorcycle star Scotty Pollacheck to take the point lead. Scored His First Win Since 2019, Angie Smith Looks to Continue Countdown Ascent in Texas, Three Races Left to Decide the 2022 NHRA Pro Stock Motorcycle Champion. Top Fuel 8 NX. [2], In 2013 the NHRA made a rule change to limit the V-Rods.[3]. $5,999.99 $6,499.99. A competitive Pro Stock car can run in the 6.5s at more than 210 mph. NHRA Pro Stock Motorcycle Team Forming on the West Coast A new West Coast-based Pro. By contrast, a Top Alcohol Dragsters output is about approximately 4,000 hp. Typical valves sizes are around 2.600-inch for intake and 1.800-inch for exhaust. Steel offers durability while aluminum has a cushioning effect that some builders prefer. Bodies must be unaltered and retain a full factory interior. What is the difference between Pro Mod and Pro Stock? The lowest elapsed time in a National Hot Rod Association Pro Stock motorcycle race is 6.665 seconds, by Karen Stoffer (USA) on 13 March 2022 at the Amalie Motor Oil NHRA Gatornationals at Gainesville Raceway in Gainesville, Florida, USA. 1 qualifier on his DENSO/Strutmasters/Matt Smith Racing EBR with a run of 6.779 at 199.20 at the 40th and final Lucas Oil, Andrew Hines knows what it feels like to taste success at Atlanta Dragway, doing it three times in his Pro Stock Motorcycle career, including the most recent visit to the track. Powered by a supercharged and fuel-injected 500-cubic-inch adaptation of the famed Chrysler Hemi engine, Top Fuel dragsters can burn up to 15 gallons of nitromethane fuel during a single run. They can make in excess of 1,300 horsepower. She would ride on the back of the motorcycle with her mom and dad from the age of 6. Duttweiler does admit there are challenges in lowering the decks. Engines must be correct for the make and model vehicle and must retain stock cylinder heads, intake manifold, and carburetor. Bringing down the deck height, combined with raising the cam location, allowed shorter, stronger pushrods. This website uses cookies to improve your experience while you navigate through the website. It does not store any personal data. The Pro Stock Motorcycle class has long been one of NHRA's most competitive and most diverse eliminators, and it figures to become even more competitive with the arrival of a new four-valve Suzuki engine package offered by Vance & Hines, the most successful team in the history of the class. Competitors making the switch from the two-valve to four-valve combination will have to make only minor airbox modifications since the new head is actually smaller than its predecessor. 1 spot and broke the track e.t. NHRA Pro Stock Motorcycle and Nitro Harley News, Hector Arana Jr. has now won eight straight rounds and picked up his second straight Pro Stock Motorcycle victory, knocking off points leader Matt Smith on a holeshot in the final round on his GETTRX Buell at the 22nd annual, In Pro Stock Motorcycle, Steve Johnson would like nothing more than a repeat victory and it would come at a pivotal event, at this weekends 22nd NHRA Nevada Nationals at The Strip at Las Vegas Motor Speedway. Engine, chassis, and body modifications are virtually unlimited. The project was a joint effort between the Harley-Davidson Product Development Center, the Vance & Hines Race Shop and, of course, the NHRA tech department. To put that in perspective, the traditional big-block Chevy, upon which the DRCE platform traces its heritage, has a deck height of 9.800 inches. Ferri then performs another 40 hours of finishing work and cylinder honing. How much horsepower does a NHRA Pro Stock Motorcycle have? Matt Smith, 5X NHRA Pro Stock Motorcycle champion, discusses his Suzuki and V-Twin engine programs. In an all-Matt Smith Racing final round, Scotty, In Pro Stock Motorcycle, Pollacheck continued the strong start to his 2021 season, picking up his first No. Top Fuel 9.9 XTR. What is the fastest drag bike in the world? Fuel injection is permitted, and spec gasoline is the only fuel allowed. It is not uncommon for entries to run in the sixes at more than 200 mph. 1 qualifier since 2019 with a run of 6.789 at 198.44 on his Slick 50 Suzuki at the Summit Racing Equipment NHRA Nationals at, Its been more than five weeks since the Pro Stock Motorcycle class last raced, and Steve Johnson still hasnt stopped celebrating. Their bikes are started before they get on top of them because of the violent nature of the 1,500-hp, fire-breathing machines. They were almost maxed out when they were 1,500ccsand my brother [Matt] was running 7.30s. $2,999.99. The introduction of large cam cores that support more lift at the lobe have eased back on the rocker arms to around 1.9:1. Funny Cars are also similar to Top Fuel dragsters in that they do not use a transmission but rather transmit power to the huge Goodyear rear slicks through a multistage clutch assembly that is activated by timers. If you are a fan of high horsepower, naturally aspirated Pro Stock Motorcycles (Pro Bikes) this full event drag bike showdown in Australia is for you! A lot of things have happened since the 90s when the DRCE3 was designed, so we caught up on some of that.. I think youll be much more of a balance now, and I think its piqued the interest of a few former racers, and racers from outside the [Pro Stock Motorcycle] category.. Its 185 horsepower makes it the fastest street bike hes ever produced. 1 Larry Spiderman McBrides Top Fuel Drag Bike 5.61 Seconds. If you want to make good power up high, you have to have a short intake runner.. Learn more about our use of cookies: cookie policy, Hector Arana Jr. Wins Back to Back NHRA Races. A STEAL! Top Fuel 7 SX. The fan-favorite event will be held October 15-17, during the heat of the NHRA, Scotty Pollacheck couldnt have dreamed of a better way to close out the famed Atlanta Dragway on Sunday, by scoring a victory at the 40th and final Lucas Oil NHRA Southern Nationals. But to win the 40th and final race in, Andrew Hines picked up the most recent Pro Stock Motorcycle victory at Atlanta Dragway, doing so at the track in 2019. The DRCE2 and DRCE3 are no longer manufactured, says GM race engineer Roger Allen. "Right now, this four-valve design is more powerful than the best of our two-valve motors. Aside from the 2012-13 championship runs from the highly talented Hemi drivers of Allen Johnson and Jeg Coughlin Jr., the DRCE engine has dominated the Pro Stock ranks since Gliddens glory days. What is the fastest speed on a motorcycle? The scale of this launch is unprecedented in the drag racing world, and it highlights our companys technical capabilities, said Mike Kennedy, president of Vance & Hines. Today, the engine can be found in Chevy, Dodge, Ford, and Pontiac Pro Stock cars and may be the most refined engine to ever grace a National Hot Rod Association dragstrip. Super Gas entries, which run on a 9.90 index, are primarily full-bodied cars and street roadsters. California law makes it illegal to engage in street racing, drag racing or speed contests on public roads, streets and highways. $8,499.99. The class features a wide variety of makes, models, and engines, including V-Twin entries from Harley-Davidson, Victory, EBR, and Buell and inline four-cylinder-equipped Suzuki and Kawasaki models. Andrew Hines won three championships and Ed Krawiec won two, utilizing the V-Rod. Maskins first short-deck engine was a custom Merlin block. 2022 NHRA Camping World Drag Racing Series Awards Ceremony photo gallery, Auto Club NHRA Finals Sunday photo gallery, Auto Club NHRA Finals Saturday photo gallery, Auto Club NHRA Finals Friday photo gallery, NHRA Nevada Nationals Sunday photo gallery, NHRA Nevada Nationals Saturday photo gallery, NHRA Nevada Nationals Friday photo gallery, Texas NHRA FallNationals Sunday photo gallery, Texas NHRA FallNationals Saturday photo gallery, Texas NHRA FallNationals Friday photo gallery, Betway NHRA Carolina Nationals Sunday photo gallery, Betway NHRA Carolina Nationals Saturday photo gallery, Betway NHRA Carolina Nationals Friday photo gallery, Pep Boys NHRA Nationals Sunday photo gallery, Pep Boys NHRA Nationals Saturday photo gallery, Pep Boys NHRA Nationals Friday photo gallery, Dodge Power Brokers NHRA U.S. Nationals Monday photo gallery, Dodge Power Brokers NHRA U.S. Nationals Sunday photo gallery, Dodge Power Brokers NHRA U.S. Nationals Saturday photo gallery, Dodge Power Brokers NHRA U.S. Nationals Friday photo gallery, Lucas Oil NHRA Nationals Saturday Gallery, Flav-R-Pac NHRA Northwest Nationals Sunday photo gallery, Flav-R-Pac NHRA Northwest Nationals Saturday photo gallery, Flav-R-Pac NHRA Northwest Nationals Friday photo gallery, Denso NHRA Sonoma Nationals Sunday Photo Gallery, Dodge Power Brokers NHRA Mile-High Nationals Sunday photo gallery, Dodge Power Brokers NHRA Mile-High Nationals Saturday photo gallery, Tech Specs: Inside Chevys NHRA Pro Stock engineThe 500-cid DRCE. Analytical cookies are used to understand how visitors interact with the website. The traditional 26-degree intake and 17-degree exhaust valve anglesboth with a 4-degree cantin a big-block Chevy has morphed into the neighborhood of 9 to 11 degrees with an 8- or 9-degree cant in todays Pro Stock cylinder head. Home FAQ Quick Answer: How Much Power Do Pro Stock Bikes Make. You couldnt take [short deck height] away and have the engine you have today.Richard Maskin, Dart Machinery. A shorter rod comes off TDC much quicker. Similar to their Top Fuel counterparts but with a shorter wheelbase and a carbon-fiber body that loosely resembles a production-based automobile, Funny Cars can run in the 3.8-second range and are capable of speeds in excess of 330 mph. About this time, another engine dynamic came into play that helped increase the rev potential: big-bore x short-stroke. Dragsters, altereds, street roadsters, coupes, sedans, front-engine nostalgia dragsters, sport compact cars, and trucks race in 75 classes. No team will confirm their shift points today, but 11,000-plus rpm is never denied in private conversation. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Star Racing and owner George Bryce have won six NHRA Pro Stock Motorcycle championships and collected 80 different NHRA national event wins under their 10 different Star riders. The high performance motorcycle company is also a worldwide mail-order parts business, with engine building, a state-of-the-art machine shop and dyno services. Sampey, The Scrappers Racing team is looking forward to wowing the crowd in their Pep Boys machines at their sponsors title event, the Pep Boys NHRA Nationals. These are the Black Ops of Pro Stock drag racing. Constructed of chromoly steel tubing and carbon-fiber composite, Top Fuel cars are 25 feet long and weigh 2,330 pounds in race-ready trim. The Five Fastest Motorcycle Drag Bikes Money Can Buy. Can Jerry Savoie Make it Two in A Row in Norwalk? Six-time champion Warren Johnson has been perhaps the most prominent advisor in the development of the DRCE platform. The rod-to-stroke ratio is also based on how much cylinder head you have, cautions Ferri. By January of 2020, we had a CNC cut model submitted for approval.. Before that, wed kicked around a few ideas as far as overall design and some of the things we wanted to try, including the finger-style followers. Mike Salinas (Top Fuel), Jianna Evaristo (Pro Stock Motorcycle), and Jasmine Salinas (Top Alcohol, The road to the championship starts at this weekends 37th annual Pep Boys NHRA Nationals at Maple Grove Raceway, the first of six races during the NHRA Countdown to the Championship playoffs. 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Copyright 1996-2023, NHRA. With all eight pistons installed (not including the front and rear seals that are extremely tight and robust to withstand the high crankcase vacuum), the twisting force to rotate the crankshaft on Pro Stock engines can be measured with an inch-pound torque wrench. TheSept. 25-27contest marksthe three-time world championsfirst win at Gainesville Raceway out of 25 winsinNHRAMelloYelloDrag Racing Seriesfinals. As the cams got higher and the decks got lower, pretty soon the lifters would be out of the block, says Allen. NHRA Pro Stock Engine Performance: More than 1,400 hp and 800 lb-ft of torque Engine speed limit: 10,500 rpm Engine Block Design: 90-degree V-8, with four-bolt steel bearing caps (center. The key to horsepower is keeping all the cylinder pressure inside the cylinder, so much of the sophistication in Pro Stock development has been in tighter clearances, reduced ring tension and superior ring seal. In its Pro Stock testing, Total Seal says moving from a .043-inch ring pack down to .0325-inch added 13-15 horsepower, and .0325 down to .0276-inch added 8-10 horsepower. No category in NHRA competition features more variety than Comp. A Top Fuel Dragsterdistinguished by a supercharged, custom-built, 500-cubic-inch engineboasts 11,000 horsepower and burns nitromethane. Hans-Henrik Thompsons Electric Bike 6.8 seconds per quarter mile. We will safeguard your e-mail and only send content you request. The Vance & Hines team also recently announced the end of their long factory-backed Harley-Davidson effort, a move that allowed more time to devote to the four-valve project. From 2004 to 2012 the Vance and Hines V-Rod was arguably the most dominant motorcycle in the class. But the driving question remains: What first prompted this miniaturization of the cylinder block, and whats motivating it today? Enjoy! Weve heard numbers around 22 inches of water, which equates to about .80psi. Four bikes went down the track Saturday evening and then the rest of the session was cancelled, leaving most without a qualifying run. The cookies is used to store the user consent for the cookies in the category "Necessary". Fastest 1/4 mile ever 3.58 secs @ 386 mph (621.61 km/h)Santa Pod dragstrip is the venue in which the current world drag racing record, a time of 3.58 seconds. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! Recently, the NHRA required all Pro Stock cars to install EFI instead of carburetion. Competition is run heads-up, first one to the finish line wins in a true display of bragging rights for today's domestic factory hot rods. Mopar has the Hemi 99 (PN P4876887) and the Hemi 06 (PN P5153454) blocks that are eligible. The main oil galley is between the camshaft and crankshaft, and the oil circuitry to the lifters is controlled with a billet rear cover. racers, Top Dragster presented by Racing RVs (open-wheel entries) and Top Sportsman presented by Racing RVs (full-bodied cars) feature a qualified field of 32, 48, or 64 entries. And increasing the rev factor in a naturally aspirated engine is how the builder converts torque into more horsepower. 2023 Power Automedia. Smith finished off a nearly-perfect weekend in, After a year away from World Wide Technology raceway, the Pro Stock Motorcycle class returned with a vengeance on Friday, with defending world champ Matt Smith making an impressive run of 6.709 at 202.82 on his Denso Auto Parts Buell, Pro Stock Motorcycle also returns to action in St. Louis to this weekends NHRA Midwest Nationals at World Wide Technology Raceway and Joey Gladstone brings plenty of momentum with him after his victory in Reading. This cookie is set by GDPR Cookie Consent plugin. NHRA: Angelle Sampey relives sideswiping the wall at 200 mph October 9, 2022 Angelle Sampey relives sideswiping the wall at 200 mph by David Kennedy At 200 mph, things. Many body styles are represented in the Pro Mod class. Sampey finished off a fantastic day in Pro Stock Motorcycle with her second victory in the Countdown to the Championship. Counterweight designs vary between engine builder preferences but most teams run 2.500-inch mains (409 size) and 1.888-inch rod journals (Honda size). 2 Peter Svenssons UEM Top Fuel Bike 5.7 Seconds. NHRA also requires a spec fuel for all cars: For 2015 it was changed to. Pro Stock engines use electronic fuel injection and spec gasoline and are restricted to a maximum of 500 cubic inches. Keith Jones and Joe Castello ask Matt about his road to b. Hines acknowledged that the COVID-19 pandemic slowed the development of the four-valve project, particularly when it came to obtaining parts and components from outside suppliers. Right now, our Suzuki customers are perhaps our biggest priority, saidHines. Hines wouldnt speculate when it comes to the anticipated performance of the Suzuki four-valve, but he did acknowledge that the two-valve platform that has been the standard for decades is likely on borrowed time. What is the Top Fuel dragster world record? That watershed tactic is lowering the deck height of a cylinder block; that is, narrowing the distance from the centerline of the crankshaft to the surface of the cylinder-head deck. What engines do Pro Stock Motorcycles use? What is the difference between Pro Mod and Pro Stock? That change, of course, didnt come at once. Smiths father, Rickie, was named one of the Legends of Thunder Valley in, Jianna Salinas and Jimmy Underdahl, both Pro Stock Motorcycle riders for Scrappers Racing, will sit out the remaining events of the 2021 NHRA Camping World Drag Racing Series. A traditional BBC has bore centers of 4.840 inches. The Pro Stock Motorcycle class will race at 15 events next season, including its customary opener at the AMALIE Motor Oil NHRA Gatornationals in Gainesville on March 10-13. Mike Salinas qualified seventh in Top Fuel and Jimmy Underdahl qualified fifteenth in Pro Stock Motorcycle. Absolutely. That got the pin out of the oil ring. The block supports a total of nine 70mm to 80mm cam bearings. What engines do Pro Stock Motorcycles use? Eliminations in both classes are run using a traditional bracket racing format with a full three-amber Christmas Tree start, and the breakout rule is enforced. Ring packages are incredibly thin: as thin as.021 (and .110-inch wide) for the top two rings and 2mm oil rings. It also prompted cylinder-head porters to raise the intake-port roofs and stand the valves up, giving the airflow a straighter shot at the valve. Its weight race ready is 830 pounds, not too shabby for a big modern Top Fuel motorcycle. Eight of the top riders in the two-wheeled category will face off in the one-day shootout, with the first round being set from a rider callout. While its been tried, no one runs a 180-degree crankshaft. Gary [Claudio] of Pontiac Racing wrote a letter, and I handed it to the tech guys. The first running engine was ready for dyno testing last November. 2 spots at the DENSO Spark Plugs NHRA Four-Wide Nationals at The Strip at Las Vegas Motor Speedway. Small-blocks mirror Pro Stock in a lot of ways, adds Duttweiler. Mopar Hemi on the left, Ford Pro Stock block on the right. Simply shaving the deck height doesnt solve all the problems, however. torque. The runner has to see the booster.. Showroom-ready Chevrolet Camaros, Ford Mustangs, and Dodge Challengers face off in heads-up battles quicker than eight seconds and faster than 170 mph. Years ago I was at 1.8:1, says Ferri. Switching to EFI would also make the cars more relevant to todays production vehicles and reduce the size of the air scoop, which would help increase driver visibility. Once we get them sorted out, I dont see any need to go back to the two-valve stuff. Rod length obviously affects piston design. What is the NHRA Pro Stock Motorcycle record? That puts the crankshaft stroke as low as 3.520-inch. But this bike isnt just about power or handling or even about speed. KB Racing with Greg Anderson and Jason Line have won six NHRA Pro Stock championships in this century and wont allow even the slightest peek at their equipment in the pits. All logos and images are reserved. It was always about the intake manifold, says Maskin. Stock. 1, Pro Stock Motorcycles Return to Action in St. Louis, Jianna Evaristo Poised for Pennsylvania Magic, Road to NHRA Pro Stock Motorcycle Championship to Begin This Weekend, Angelle Sampey Secures 57th Career No. Currently, there are several different engine configurations being raced in the Pro Stock Motorcycle class including a Suzuki inline four-cylinder, a Harley-Davidson four-valve V-twin, and an S&S two-valve V-twin. 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