Buell 1125R, 2009
The superbike category of Buell 1125R is powered by the 1125 cc liquid-cooled 72-degree V-Twin Helicon engine generating 146 crank hp and 82 ft. lbs. of peak torque. With a foundation built on the core Buell Trilogy of Technology creating optimum performance, the 1125R remains true to Buell’s original sense of sportbike style and design.
The new gear position readout is added to the digital display on the instrument panel as a scroll-to feature. A high-output alternator has increased capacity for accessory use. Slider bobbins have been added to the swingarm for protection and easy use of a rear stand.
The front wheel rides on fully adjustable Showa 47 mm upside-down forks, while the Buell ZTL2 front brake has an eight-piston caliper. A smooth-shifting six-speed transmission works with a HVA (Hydraulic Vacuum Assist) slipper-action clutch that uses engine vacuum for easy clutch-lever action and reduced engine braking during downshifts.
The Quiet Zone aerodynamics optimize air flow around the rider for enhanced race performance and rider comfort. The fairing shape was developed using Computational Fluid Dynamics (CFD) analysis, and features six-bulb headlamps, while LED turn signals are integrated into the mirror housings.
The Buell 1125R highlights
- Buell Helicon 1125 cc liquid-cooled four-stroke, 72-degree V-Twin engine
- 146 peak hp @ 9800 rpm
- 82 ft. lbs. peak torque at 8000 rpm
- New Phantom Metallic frame and swingarm with blacked-out footpeg mounts and heel guards
- New tinted windscreen, Hero Blue with Arctic White bodywork and Smoked with Racing Red and Midnight Black
- New gear position readout on the instrument cluster
- New high output alternator increases capacity for accessory use
- New slider bobbins on swingarm for protection and use of rear stand
- Underslung muffler with Helmholtz chamber
- DDFI 3 Electronic Fuel Injection ECM
- New targeted fuel injectors
- Ram-air pressurized air box
- Twin side-mount radiators
- HVA (Hydraulic Vacuum Assist) Slipper Action clutch
- ZTL2 four-pad, eight-piston front brake
- Fully adjustable 47 mm Showa inverted fork
- Fully adjustable Showa rear shock absorber
- Fuel-in Frame 5.3-gallon capacity
- Dry Weight: 375 pounds
- Wheelbase: 54.6 inches
- Seat height: 30.5 inches
- Pirelli Diablo Corsa III tires
- Pre-Wired for Accessory Heated Grips
- Midnight Black, Arctic White or Racing Red bodywork
Dimensions
Overall Length6 78.6 in. (1996 mm)
Overall Width8 28.2 in. (716 mm)
Seat Height7 30.5 in. (775 mm)
Ground Clearance6 4.50 in. (114 mm)
Rake7 (steering head) 21.0°
Fork Angle7 21.0°
Lean Angle9:
• Soft Contact, Right - 48°
• Soft Contact, Left-48°
• Hard Contact, Right-50°
• Hard Contact, Left-50°
Trail7 3.3 in. (84 mm)
Wheelbase6 54.6 in. (1387 mm)
Tires4 (Pirelli Diablo Corsa III):
• Front 120/70 ZR-17
• Rear 180/55 ZR-17
Fuel Capacity 5.30 gal. (20.1 L)
Fuel Economy2
(EPA urban/highway test)
39/53 mpg (6.0/4.4 L/100 km)
Reserve Fuel Capacity 0.8 gal. (3.0 L)
Weight:
• Dry Weight
• Gross Vehicle
Weight Rating
370 lbs. (168 kg)
850 lbs. (386 kg)
Load Capacity 390 lbs. (179 kg)
Engine
Engine Helicon liquid-cooled, 4-stroke, 72° V-Twin
Valves Dual OHC, four valves per cylinder, finger follower design and shimming
Bore x Stroke 4.055 in. x 2.658 in.
(103.00 mm x 67.50 mm)
Displacement 68.70 cu. in. (1125 cc)
Compression Ratio 12.3:1
Fuel Delivery Dual 61 mm down draft throttle bodies,
DDFI III fuel injection
Intake Zero-resistance airbox, pressurized
RAM air intake
Exhaust Tuned, tri-pass resonance chamber with intregal helmholtz tuning and mass-centralized mounting
The Torque
(North America per SAE J607) 82 ft. lbs. @ 8000 rpm
(111.2 nm @ 8000 rpm) Horsepower
(North America per SAE J607) 146 hp @ 9800 rpm
Lubrication Dry-sump with integrated oil reservoir in lower crankcase
Oil Capacity10 2.7 qts. (2.6 L)
Oil Filtration Disposable cartridge and washable strainer
