The First American Bike To Hit 150 MPH From The Factory

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Saturday, 31 Oct 2026 05:00 0 13 autotech

The First American Bike To Hit 150 MPH From The Factory

For decades, the American motorcycle industry seemed content to leave top-speed glory to the Europeans and Japanese. While Kawasaki, Suzuki, and Ducati were locked in an arms race toward 180 mph and beyond, US manufacturers were busy perfecting the art of the torque-heavy cruiser — bikes built for the long haul, not the speed trap. That began to change in 2007, when a scrappy Wisconsin company with deep Harley-Davidson roots did something no American production motorcycle had ever done: cracked 150 mph straight from the factory floor.

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A Country Built On Power, Not Speed

1995 Harley-Davidson Electra Glide Ultra Classic

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Buell Becomes The Anti-Harley

The Barrier-Breaking Buell 1125R

Buell was already building fast sportbikes by the mid-2000s, with models like the XB9R Firebolt and XB9S Lightning proving its capabilities. But the company wanted more, and in 2007, it introduced the 1125R.

The 1125R took an unconventional approach to engineering. Its frame doubled as a 5.6-gallon fuel tank, while the swingarm housed the oil. This freed up space for an air intake and lowered the center of gravity, improving handling and agility.

Buell also prioritized weight savings with a massive single perimeter front brake rotor mounted near the wheel’s rim rather than the hub. This design improved braking leverage and cooling while reducing unsprung weight, making the 1125R as clever as it was unconventional.

Buell further centralized the bike’s weight with an underbody exhaust, while a belt drive offered smoother power delivery and improved durability. Unfortunately, the 1125R arrived at the worst possible time.

Launched in 2007 for the 2008 model year, it faced the financial crisis before Harley-Davidson discontinued Buell in 2009. Its controversial styling, particularly the oversized air intakes nicknamed “lobster claws,” didn’t help either. Early models also suffered from quality issues, excessive heat, and stiff suspension. But despite its flaws and short lifespan, the 1125R had one undeniable strength: speed.

The European Heart That Changed American Sportbikes Forever

Before the 1125R, Buell relied on modified Harley-Davidson V-twins that delivered plenty of low-end torque but lacked the high-revving performance needed to challenge Japanese and European superbikes. To break the 150-mph barrier, Buell needed something completely different.

Enter Austrian engine specialist BRP-Rotax, which helped develop the 1,125cc Helicon V-twin exclusively for the 1125R. Unlike Harley’s traditional engines, it featured liquid cooling, a 72-degree layout, dual overhead cams, four valves per cylinder, and ram-air induction. The result was an engine that combined strong V-twin torque with the high-rpm performance needed to exceed 150 mph.

Buell Breaks 150 MPH And Keeps Going

150 mph might not sound like much in today’s motorcycle market, and to be fair, it wasn’t a huge accolade for bikes in 2007, either. The Vincent Black Lightning, a British bike, had hit 150 mph in the hands of Rollie Free back in 1948. Japanese and European bikes had been routinely breaking 180 mph for years. The Hayabusa had effectively ended the top-speed wars in 1999. But US production bikes had largely focused on torque over speed, and were lagging well behind.

The 1125R aimed to remedy that. It had 146 hp, low weight, and a clear goal. It achieved that goal — and not by a small margin. Period road tests put the bike at 158 mph and 161 mph, comprehensively surpassing the 150 mph mark.

How The 1125R Stacked Up Against The Competition

	Buell 1125R	Honda CBR1000RR	Suzuki GSX-R1000	Ducati 1098
Engine	1125cc liquid-cooled 72° V-twin	998cc liquid-cooled inline-four	999cc liquid-cooled inline-four	1099cc liquid-cooled L-twin
Horsepower	146 hp	175–176 hp	185 hp	160 hp
Torque	82 lb-ft (Crank/Brake Torque), 75.9 lb-ft (Rear-Wheel Torque)	85 lb-ft	86 lb-ft	90.4 lb-ft
Top Speed	158–161 mph	180 mph	180–186 mph	173 mph
Weight	375 lbs dry / 466 lbs wet	438 lbs wet	379 lbs dry	381 lbs dry

The Buell 1125R arrived at a time when the sportbike class was dominated by absolute giants, including Japanese inline-four-powered models like the Honda CBR1000RR and Suzuki GSX-R1000, and European machines like the Ducati 1098. Smooth, refined, and brutally fast, the Honda CBR1000RR was the benchmark all-rounder of the era and objectively the better motorcycle for most riders, but the Buell still held advantages: stronger mid-range punch, quicker steering characteristics, and distinctive chassis innovation.

The 1125R also struggled against the Suzuki GSX-R1000, which was arguably the king of outright performance at the time and known for ferocious acceleration and incredible top-end speed. Compared to the GSX-R1000, the Buell simply lacked the same explosive peak performance, but it fought back with compact dimensions and a more distinctive, arguably more engaging character at real-world road speeds. The 1125R’s most direct rival was the Ducati 1098.

Buell 1125R Vs. Ducati 1098

This was a fascinating comparison because both bikes approached performance with a big V-twin philosophy rather than inline-four power, and surprisingly, the Buell came closer than many expected — even though the Ducati was the more premium option. While the Ducati was a high-strung masterpiece with around 160 hp and a higher top speed, it was a demanding bike on the street and more race-focused than the more street-friendly 1125R. The Rotax engine also provided a thick torque curve that made the 1125R feel fast in real-world riding. The Buell had a more agile feel and could genuinely keep pace with the Ducati and other big-name rivals on tight roads.

While the Ducati 1098 was faster, more polished, more exotic, and ultimately a superior sportbike, the 1125R was a serious, budget-friendly contender that proved an American sportbike could stand in the same conversation as Ducati and other top manufacturers of the day.

The 1125R Sparked One Of AMA Racing’s Biggest Controversies

Buell didn’t build the 1125R just to post impressive top-speed numbers. It wanted to prove the bike was just as fast on the racetrack. That opportunity came in the inaugural 2009 AMA Pro Daytona SportBike Championship, where Danny Eslick lined up against Japanese favorites like the Yamaha YZF-R6, Honda CBR600RR, Suzuki GSX-R600, and Kawasaki ZX-6R, as well as the Ducati 848 and Triumph Daytona 675. Its inclusion immediately divided the paddock because the 1,125cc V-twin looked oversized on paper, even though the class was built around performance-balancing rules rather than displacement alone.

Eslick answered the criticism the best way possible, winning six races and clinching the inaugural championship. While the triumph helped validate the Helicon-powered sportbike, it also prompted adjustments to the class rules. Sadly, Buell’s breakthrough came at the worst possible time, with Harley-Davidson closing the brand before it could build on its newfound momentum.

Outside Of Mass Production, The American Motorcycle Has Gone Far Faster

Other US-made bikes had broken the 150 mph mark before the Buell 1125R, but these were either homologation specials like the Harley-Davidson VR1000 or boutique machines like the MTT turbine series. There’s also the Lightning LS-218, an American-made electric bike capable of 218 mph.

Buell themselves would break 150 mph again in later years, with the Hammerhead 1190 (around 183 mph) and the Erik Buell Racing (EBR) 1190RX, which can approach 190 mph. But the Buell 1125R will forever stand as a “what if” of motorcycling — a high-performance, high-speed American sportbike that, while not without its issues, was cut down by factors outside its control before it reached its prime. How far it could have gone will forever remain a mystery, but the 2009 AMA Pro Racing Daytona Superbike Championship title it secured suggests it could have gone a long way. It just needed the chance to prove it.

Harley Killed Buell, But It Couldn’t Kill The 1125R’s Legacy

Harley-Davidson pulled the plug on Buell in October 2009 as part of its post-recession restructuring, ending production of the 1125R after just two model years. Its naked sibling, the 1125CR, survived only briefly before the factory closed, making the Helicon-powered bikes some of Buell’s shortest-lived models.

Erik Buell wasted no time starting over. Within weeks, he founded Erik Buell Racing (EBR), initially building race-prepped 1125Rs before reworking the Helicon into a larger 1,190cc V-twin. Output climbed from 146 horsepower to around 185 hp, powering the 1190RR, 1190RS, and later the 1190RX. Even today’s Buell Hammerhead 1190 traces its lineage directly back to the 1125R, retaining that evolved engine architecture and many of the same engineering principles. The 1125R didn’t mark the end of America’s first 150-mph sportbike — it laid the foundation for every Buell superbike that followed.

The 1125R’s DNA Is Now Powering A 175-HP Cruiser

Production and customer deliveries have begun for the 2026 Buell Super Cruiser, proving the engineering path started by the 1125R is still alive. Developed with Roland Sands Design, the new bike uses an evolved 1,190cc version of Buell’s liquid-cooled 72-degree V-twin producing 175 hp and 94 lb-ft of torque.

At 485 lbs wet without fuel, the Super Cruiser combines that superbike muscle with FOX suspension, dual Brembo front brakes, Dunlop Sportmax Q5A tires, and a hydraulic slipper clutch. It starts at $25,900 and looks like a traditional American cruiser until the engine starts screaming. Harley killed the original Buell while refocusing on cruisers, yet the 1125R’s descendants have now returned to fight Harley on its own turf. That is one hell of a comeback.

The Buell 1125R Is One Of The Most Underrated Collectibles

The Buell 1125R checks nearly every box collectors look for. As the final and most advanced motorcycle developed under Harley-Davidson ownership, it introduced a liquid-cooled Rotax Helicon V-twin alongside signature Buell innovations that made it one of the most distinctive sportbikes of its era. Yet despite its short production run and championship-winning pedigree, the market has yet to fully recognize its significance.

Collectors Are Still Sleeping On The 1125R

An April 2026 auction showed just how undervalued the 1125R remains. A 2008 25th Anniversary Signature Edition with only eight miles reached a high bid of $6,500 on Bring a Trailer but failed to meet its reserve. A 2009 example with approximately 6,700 miles sold for just $4,150 in October 2025.

Those numbers are almost absurd for a 146-hp motorcycle with a championship-winning bloodline and such an important place in American sportbike history. Buyers still treat the 1125R like a strange used motorcycle rather than a genuine collectible, making this a great time to grab one before the rest of the market wakes up.

The 1125R debuted at $11,995 before climbing to $12,499 for its final model year, but solid rider-quality examples can still be found in the $3,500 to $5,000 range, with exceptional low-mileage bikes breaking the $6,500 mark. Considering that many Japanese and European superbikes from the same era were produced in far greater numbers and often sell for considerably more, the Buell looks seriously undervalued. However, there are lingering concerns that keep prices in check.

Why Buyers Still Think Twice About The 1125R

The 1125R’s low prices have less to do with performance than perception. Early bikes earned a reputation for jerky fuel injection, excessive heat around the rider, and polarizing “lobster claw” radiator pods, while many later bikes became notorious for charging-system failures caused by overheating stators.

Then there’s the orphan-brand factor. Harley-Davidson shut Buell down in 2009, leaving many buyers worried about long-term parts support. While common service items and many engine components are still obtainable, finding replacement body panels, electronics, or other Buell-specific parts can take time and usually means relying on specialist suppliers or the used-parts market.

Those concerns are enough to keep cautious buyers away, even though many of the bike’s original weaknesses have well-documented fixes. For enthusiasts willing to do their homework, that’s exactly what makes the 1125R such an overlooked value.

Sources: Motorcycle Consumer News, Bring a Trailer