Buell 1125R - Specifications & Review

1125R

Article Complete Info

Articleid458588
CategorySport
MakeBuell
Model1125R
PriceUS$ 12499. Prices depend on country, taxes, accessories, etc.
Year2010

Chassis, Suspension, Brakes & Wheels

FrametypeBlack aluminium frame, fuel in frame
FrontbrakesSingle disc. ZTL2-type brake, 8-piston, 4 pads, fixed caliper, single-sided, inside out, stainless steel, floating rotor
Frontbrakesdiameter375 mm (14.8 inches)
Frontsuspension47 mm Showa inverted forks with adjustable compression damping, rebound damping and spring preload
Fronttyre120/70-ZR17
Frontwheeltravel120 mm (4.7 inches)
Rake21.0°
RearbrakesSingle disc. Two-piston, direct mount caliper; stainless steel, fixed rotor
Rearbrakesdiameter240 mm (9.4 inches)
RearsuspensionShowa coil-over monoshock with external piggyback reservoir and adjustable compression damping, rebound damping and spring preload
Reartyre180/55-ZR17
Rearwheeltravel127 mm (5.0 inches)
Trail84 mm (3.3 inches)

Engine & Transmission

Borexstroke103.0 x 67.5 mm (4.1 x 2.7 inches)
ClutchWet, multi-plate, Hydraulic Vacuum Assist (HVA) slipper – action clutch, hydraulic clutch lever effort
Compression12.3:1
CoolingsystemLiquid
Displacement1125.86 ccm (68.70 cubic inches)
EnginedetailsV2, four-stroke
ExhaustsystemTuned, tri-pass resonance chamber with integral helmholtz tuning and mass-centralised mounting
FuelsystemInjection. Dual 61 mm down draft throttle bodies, DDFI III fuel injection
Gearbox6-speed
Power146.00 HP (106.6 kW)) @ 9800 RPM
Torque111.19 Nm (11.3 kgf-m or 82.0 ft.lbs) @ 8000 RPM
TransmissiontypefinaldriveBelt
Valvespercylinder4

Other Specifications

ColoroptionsRacing Red; Arctic White; Midnight Black; All with tinted windscreen
CommentsInstrument cluster with ODIS (Onboard Diagnostic Information System) featuring analog tachometer with integrated shift light, digital speedometer on LED display, odometer, ODIS service code display, 4-digit security system with ignition immobiliser, lap timer (records up to 99 lap times) and splits, ambient air temperature, coolant temperature, average and instantaneous fuel consumption, miles to next service display, low fuel (plus miles traveled on reserve); high beam, neutral, turn signals; clock
StarterElectric

Physical Measures & Capacities

Fuelcapacity20.00 litres (5.28 gallons)
Groundclearance114 mm (4.5 inches)
Oilcapacity3.10 litres (0.20 quarts)
Overalllength1,996 mm (78.6 inches)
Overallwidth716 mm (28.2 inches)
Seatheight775 mm (30.5 inches) If adjustable, lowest setting.

About Buell

Country of Origin: United States
Founder: Erik Buell
Best Known For: Mass centralization, fuel-in-frame, rim-mounted front brake; XB and 1125/1190 platforms

Company History

Buell Motorcycles, founded by engineer and former racer Erik Buell, reimagined sportbike design around mass centralization and chassis stiffness. Early Buells used Harley-Davidson V-twins in compact frames, evolving into the XB series with fuel stored inside the frame spars and a perimeter (rim-mounted) front brake that reduced unsprung weight. The result was agile steering, fierce mid-corner feedback, and a uniquely American take on the sportbike: torque-rich engines married to short wheelbases and steep geometry. Later, liquid-cooled Rotax-powered 1125 models pushed performance further. Buell’s partnership with Harley-Davidson provided factory resources and dealer reach, but strategic tensions and the 2008–09 downturn led to the brand’s closure under H-D ownership. Erik Buell returned with Erik Buell Racing (EBR), developing 1190cc superbikes that proved competitive yet financially difficult in a niche market. The Buell name has since resurfaced under new stewardship, underscoring how resilient the idea remains. Historically, Buell matters because it asked different questions: What if the frame carried fuel? What if the front rotor’s diameter increased while caliper mass shrank? What if rideability on real roads mattered as much as peak dyno numbers? For riders, a Buell offers character—snappy turn-in, stout midrange, and the feeling that the chassis is a living partner. Love or quibble with the quirks, the brand expanded sportbike vocabulary, leaving an imprint on how engineers and enthusiasts think about where weight lives and how a motorcycle should communicate at the limit.

Other Years

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