Introducing the new power-to-weight class leader, the Buell 1125CR. A fearsome blend of superbike performance, sinister styling and wicked attitude, it pushes the boundaries of the naked category. This 21st century, café racer combines a featherweight chassis with a dominating 1125cc liquid-cooled, V-Twin for powerful acceleration in any gear. Add to that its aggressive, sport riding position and precise handling and you’ve got an experience like no other.
Power
1125 Helicon Engine
A Buell exclusive, the powerful Buell Helicon® 1125cc, 72-degree, liquid-cooled, V-Twin engine.
1125cc
Most powerful Buell street engine to date. By not compromising to conform with a race class spec, 1125cc’s gives this engine the right bore and stroke combination to deliver superbike power: 146 Hp. and 82 ft/lbs of torque, with a redline of 10,500 RPM. The broad powerband and seamless torque curve generates hard and fast acceleration from anywhere on the RPM range.
72 degree V-Twin
The look, sound, and feel of a V-Twin engine deliver the character and superior ride experience you expect on a Buell. The 72-degree V-angle creates a compact, efficiently packaged engine and allows additional weight to be distributed to the front of the bike. It also allows for inclusion of an optimum downdraft fuel intake system, thereby lowering the height of the center of gravity as well.
103.3 mm Bore & 67.5 mm Stroke low inertia flywheel
A big bore, short stroke and light flywheel deliver complete power and quick-revving performance.
Finger-Follower Valve Lifters
The Buell Helicon motor's valves are actuated with finger followers and adjusted with shims. Derived from F-1 race technology, finger follower valve actuation reduces friction and permits a quicker valve opening due to reduced weight. Shim replacement is quick and easy due to the unique follower retention system.
Closed loop fuel injection system, DDFI3 EFI 61mm dual throttle bodies
Immediate throttle response in any environment is delivered by the Helicon motor’s closed loop FI system. It provides constant feedback to the ECU based on environment and ensures an efficient mixture control system, resulting in smoother throttle operation and better fuel economy. The 61mm dual throttle bodies allow for superior air intake and optimum engine performance.
Dual Overhead cams with self adjusting chain drive; 4 Valves
The single-cam-per-cylinder chain drive contributes to the engine’s compact design. The intake cam drive is driven by the chain while the exhaust cam is gear driven. It requires less space over the cylinder head than a three-sprocket design, reduces weight and allows the engine to be located in an optimum, forward position.
Magnesium Valve Covers
Durable and lightweight, the magnesium valve covers are another example of how Buell is able to keep the overall weight of the motorcycle extremely low.
Primary balancing with three internal shafts
The dry sump improves power by increasing efficiency, while the integrated oil reservoir at the lower left side of engine keeps the engine compact and fluids low, contributing to mass centralization.
Twin Side-Mounted Radiator Cowlings
Twin radiators are mounted longitudinally within aerodynamic cowlings. The position of the radiator system allows the engine to be positioned forward in the chassis, creating a more optimal weight distribution from front to rear. In addition, the position of the cowlings captures free-flowing air, driving airflow into the cowlings (and away from the rider), directing the air for more efficient engine cooling.
Dry Sump Oiling with integrated oil reservoir located in the lower crankcase
The dry sump improves power by increasing efficiency, while the integrated oil reservoir at the lower left side of engine keeps engine compact and fluids low, contributing to mass centralization.
Compensated Front Sprocket
By placing the compensation function in the transmission output sprocket rather than the wheel sprocket, unsprung weight is reduced, helping to improve handling.
Camshafts
The single-cam-per-cylinder chain-drive contributes to the engine’s compact design. The intake cam drive is driven by the chain while the exhaust cam is gear-driven. It requires less space over the cylinder head than a three-sprocket design, reduces weight and allows the engine to be located further forward.
6-Speed, close-ratio transmission
With lowered final-drive gearing for hard acceleration, the six-speed, close-ratio transmission provides the rider the right gear on any ride and any situation.
Oblique stacked transmission configuration
The Helicon powertrain stacks the primary and secondary drives to yield a more compact overall design. This increases front weight distribution to aid in anti-squat and improve suspension response. It also allows Buell engineers to design a forward placement of swing arm pivot, providing room for a longer swing arm and better overall handling.
Hydraulic Vacuum Assist (HVA) slipper -action clutch
The smooth clutch lever effort and slipper-like action mechanism reduces engine braking during hard deceleration and enhances the overall rider experience.
A 12 Liter Air box
The large, 12-liter airbox is designed to optimize air intake and accommodate a large, easy-to-service air filter.
Ram Air System
Using computational fluid dynamics to optimize the air flow, the RAM air system pressurizes the air box for a performance gain at speeds over 80 mph.
Dimensions U.S. Units Metric Units
Overall Length (5) 80.7 in. 2050 mm
Overall Width (7) 29.3 in. 744 mm
Seat Height (6)
Standard (6) 30.5 in. 775 mm
Low Profile
Ground Clearance (5) 5.43 in. 138 mm
Rake (at steering head) (6) 21.0º 21.0º
Fork Angle (6) 21.0º 21.0º
Lean Angle:
Soft Contact, Right (8) 48º 48º
Soft Contact, Left (8) 48º 48º
Hard Contact, Right (8) 50º 50º
Hard Contact, Left (8) 50º 50º
Trail (6) 3.3 in. 84 mm
Wheelbase (5) 54.5 in. 1385 mm
Tires: (3)
Front Pirelli® Diablo® Corsa III 120/70 ZR-17 Pirelli® Diablo® Corsa III 120/70 ZR-17
Rear Pirelli® Diablo® Corsa III 180/55 ZR-17 Pirelli® Diablo® Corsa III 180/55 ZR-17
Fuel Capacity 5.30 gal. 20.1 L
Reserve Fuel Capacity 0.80 gal. 3.0 L
Fuel Economy (10)
Urban 35.5 MPG N/A
Highway 47.1 MPG N/A
Weight:
Dry 375 lbs. 170 kg
Gross Vehicle Weight Rating 850 lbs. 386 kg
Load Capacity: 390 lbs. 177 kg
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Engine U.S. Units Metric Units
Engine Helicon™ liquid-cooled, 4-stroke, 72° V-Twin Helicon™ liquid-cooled, 4-stroke, 72° V-Twin
Valve Train DOHC, 4 valves per cylinder, finger follower design & shimming DOHC, 4 valves per cylinder, finger follower design & shimming
Bore x Stroke 4.055 in. x 2.658 in. 103.00 mm x 67.50 mm
Displacement 68.7 cu. In. 1125 cc
Compression Ratio 12.3 : 1 12.3 : 1
Fuel Delivery Dual 61 mm down draft throttle bodies, DDFI III fuel injection Dual 61 mm down draft throttle bodies, DDFI III fuel injection
Intake Zero-resistance airbox, pressurized RAM air intake Zero-resistance airbox, pressurized RAM air intake
Exhaust Tuned, tri-pass resonance chamber with integral helmholtz tuning and mass-centralised mounting Tuned, tri-pass resonance chamber with integral helmholtz tuning and mass-centralised mounting
Torque (North America per SAE J607) 82 ft. lbs. / 111 Nm @ 8000 RPM 82 ft. lbs. / 111 Nm @ 8000 RPM
Horsepower (North America per SAE J607) 146 HP @ 9800 RPM 146 HP @ 9800 RPM
Lubrication
Oil Capacity (9) 2.7 qts. 2.6 L
Oil Filtration Disposable cartridge and washable strainer Disposable cartridge and washable strainer
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Drivetrain U.S. Units Metric Units
Primary Drive Helical Gear, 1.806:1 ratio Helical Gear, 1.806:1 ratio
Final Drive (2) Constant path, 14mm pitch aramid-reinforced Veyance® Hibrex® belt with Flexten® Plus technology, 2.815:1 ratio Constant path, 14mm pitch aramid-reinforced Veyance® Hibrex® belt with Flexten® Plus technology, 2.815:1 ratio
Clutch Wet, multi-plate, Hydraulic Vacuum Assist (HVA) slipper – action clutch, hydraulic clutch lever effort Wet, multi-plate, Hydraulic Vacuum Assist (HVA) slipper – action clutch, hydraulic clutch lever effort
Transmission 6-speed, straight cut gears 6-speed, straight cut gears
Gear Ratios
1st 2.462 2.462
2nd 1.750 1.750
3rd 1.381 1.381
4th 1.174 1.174
5th 1.042 1.042
6th 0.960 0.960
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Chassis (3) U.S. Units Metric Units
Frame Black aluminium frame, fuel in frame Black aluminium frame, fuel in frame
Front Forks 47 mm Showa® inverted forks with adjustable compression damping, rebound damping and spring preload 47 mm Showa® inverted forks with adjustable compression damping, rebound damping and spring preload
Rear Shock Showa® coil-over monoshock with external piggyback reservoir and adjustable compression damping, rebound damping and spring preload Showa® coil-over monoshock with external piggyback reservoir and adjustable compression damping, rebound damping and spring preload
Wheels:
Front 6-spoke, ZTL™ cast aluminum 6-spoke, ZTL™ cast aluminum
Diameter 17 in. 431.8 mm
Width 3.5 in. 88.9 mm
Rear 6-spoke, cast aluminium 6-spoke, cast aluminium
Diameter 17 in. 431.8 mm
Width 5.5 in 139.7 mm
Brakes:
Front ZTL2-type brake, 8-piston, 4 pads, fixed caliper, 375 mm single-sided, inside out, stainless steel, floating rotor ZTL2-type brake, 8-piston, 4 pads, fixed caliper, 375 mm single-sided, inside out, stainless steel, floating rotor
Rear Two-piston, direct mount caliper; 240 mm, stainless steel, fixed rotor Two-piston, direct mount caliper; 240 mm, stainless steel, fixed rotor
Suspension Travel:
Front Wheel 4.72 in. 120 mm
Rear Wheel 5.00 in. 127 mm
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Electric U.S. Units Metric Units
Battery (per Battery Council International Rating) Sealed Lead Acid, maintenance-free, 12-volt, 12 amp-hour (per Battery Council International rating), 200 cca.
Charging 37-amp, permanent magnet, three-phase alternator with solid-state regulator (520W peak power) 37-amp, permanent magnet, three-phase alternator with solid-state regulator (520W peak power)
Starting 900W electric with one-way clutch 900W electric with one-way clutch
Lights (as per country regulation):
Headlamp Three-bulb headlamp with daylight running mode. 55 watt low beam (one (H7) 55 watt bulb), 110 watt high beam (one additional (H7) 55 watt bulb), 5 watt position lamp Three-bulb headlamp with daylight running mode. 55 watt low beam (one (H7) 55 watt bulb), 110 watt high beam (one additional (H7) 55 watt bulb), 5 watt position lamp
Tail/Stop Lights 5W/21W 5W/21W
Turn Signal Lights LED manual canceling LED manual canceling
License Plate Light 5W 5W
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Style/Comfort U.S. Units Metric Units
Instruments Instrument 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 immoboliser, lap timer (records up to 99 lap times) and splits, ambient air temperature, coolant temperature, gear indicator, average and instanteous fuel consumption, miles to next service display, low fuel (plus miles traveled on reserve); high beam, neutral, turn signals; clock Instrument 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 immoboliser, lap timer (records up to 99 lap times) and splits, ambient air temperature, coolant temperature, gear indicator, average and instanteous fuel consumption, miles to next service display, low fuel (plus miles traveled on reserve); high beam, neutral, turn signals; clock
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Colors (4) U.S. Units Metric Units
Midnight Black; Racing Red Midnight Black; Racing Red
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