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.
Responsiveness
Buell Intuitive Response Chassis (IRC)
The Intuitive Response Chassis (IRC) is the stiffest we’ve ever built, resulting in a bike that’s better able to hold a line with minimal flexing or bending. Constructed of lightweight aluminum, it responds to aggressive riding with precision and predictability, delivering an unprecedented amount of rider feedback, regardless of road conditions.
Frame and swing arm
A new longer cast-aluminum swing arm design optimizes the suspension geometry with the lower final drive gearing. Its pivot shaft is carried in the engine cases to create a stiff connection between the rear wheel and the rest of the chassis. Slider bobbin added to the swingarm for protection and use of a rear stand.
Fuel Capacity
With 5.3 gallons of fuel contained in the frame, as near to the center of mass as possible, the rider is able to spend more time on the road enjoying the 1125CR’s precision handling and less time at the fuel pump.
Front brake
Buell Zero Torsional Load (ZTL²) front brake utilizes a four-pad, eight-piston caliper inspired by the XBRR race motorcycle. A single 375mm rotor mounts directly to the rim producing outstanding stopping power. The caliper casting was optimized for torsional stiffness, yielding a more progressive and connected braking feel to the rider. The rim-mounted design eliminates the need for load-bearing spokes or even a second disc, resulting in a front end assembly that is significantly lighter than competitive designs.
Front suspension
To match the stiffness of the main chassis, the 1125CR uses a fully adjustable 47 mm Showa® inverted fork, contributing to superior feel and greater feedback. Spring rates and damping are optimized for agility and responsiveness.
Exhaust
Exhaust cans are heavy. It doesn’t make sense to hang them up high and off the back of the bike. Our underslung exhaust – a Buell staple since 1985 – concentrates the weight underneath the chassis to provide greater Mass Centralization. The result is a clean, uncluttered look, improved flickability and superior handling. The 1125CR exhaust system features a large-volume muffler tuned to produce a linear horsepower and torque curve.
Rear suspension
The fully adjustable, piggyback-style Showa® monoshock lets you fine-tune the ride for your weight and riding style. Linklessly mounted to a pivot point placed forward on the engine case, it enhances rigidity while reducing squat during hard acceleration.
Tires
Pirelli® Diablo Corsa III tires feature a three-zone compound for optimum street and track use.
Rear Brake
The rear brakes utilize a two-piston caliper and a 240mm stainless steel rotor. The caliper is mounted directly to the inner surface of the swing arm, hidden from view. The caliper weighs 1.5 pound less than a typical carrier-equipped rear caliper system, reducing unsprung weight and complexity.
Steel Braided Brake Lines
Both rear and front brakes are fitted with steel braided brake lines for a better correlation of lever pressure to brake pressure resulting in improved brake feel.
6 spoke Cast Aluminum Wheels
With braking forces distributed through the entire rim due to the ZTL perimeter mounted brake rotor, the Buell 6-spoke front wheel can be made extremely light. This reduces steering inertia and unsprung weight for better handling on the less-than-perfect streets you’ll ride every day.
Immediate Throttle Response Belt drive
A unique constant-tension pulley eliminates slack in the driveline, resulting in smoother on/off throttle transitions no matter what position the swingarm is in. Clean, quiet and extremely strong, the Veyance Hibrex belt with Flexten Plus technology never needs replacing, maintenance or adjustments of any kind. In addition, it weighs just 1.06 pounds, compared to drive chains that weigh four to five pounds.
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.
Rider Focused Design
Ergonomics / seating position
With relaxed footpegs and a short reach to the bars, the riding position is versatile, accommodating both an upright stance and an aggressive lean into the bike.
Weight
At just 375 lbs. dry, the 1125CR is the lightest streetfighter in its class. It feels quick and nimble, effortlessly flicking, swerving and dodging around whatever the road throws your way.
Fairing
The sinister gaze of the 1125CR hints at what’s to come when the stoplight turns green. The minimalist flyscreen gives the pilot a full view of the urban course ahead. Radical headlamps are blended into the fairing, giving the bike a purposeful stare.
Footpegs
The footpeg placement keeps you in an aggressive riding stance to optimize your ability to quickly shift your weight around the bike while still allowing for a comfortable body position that reduces weight and pressure on your hands.
Instrument panel
The instrument cluster with ODIS (On-Board Diagnostic Information System) is cradled in a lightweight, magnesium module. Compact and easy to read both day and night, the LED screen has a wide 50-degree viewing angle and features a service code display, security system with immobilizer, lap timer and splits, gear indicator, two trip odometers, ambient air temperature, and more.
Tail Section
The rear section is clean and sleek with a passenger seat hidden under an easily removable cowling.
Handle Bars
Clubman-style handlebars harken back to the days when café racers prowled the city streets. Aggressive, yet comfortable, they offer the rider superior control with a touch of style.
LED Turn signals
Front turn signals are incorporated into the aerodynamic mirror housing making it easier for other drivers to see where you’re going.
Adjustable levers
With rider comfort in mind, Buell features brake and clutch levers that are adjustable for reach. Foot controls (brake and shifter) feature toe pegs that adjust to rider foot size.
Durability Features
The side-mounted radiators and outer covers are designed to absorb an impact and minimize repair costs.
Convenience Features
Tie-down hooks on the tail section make it easy to secure extra gear.
Dimensions U.S. Units Metric Units
Overall Length (5) 81.3 in. 2066 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 TBD TBD
Highway TBD TBD
Weight:
Dry 375 lbs. 170 kg
Gross Vehicle Weight Rating 850 lbs. 386 kg
Load Capacity: 390 lbs. 177 kg
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
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
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
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
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
Colors (4) U.S. Units Metric Units
Midnight Black; Racing Red Midnight Black; Racing Red
Warranty U.S. Units Metric Units
24 months (unlimited mileage) 24 months (unlimited mileage)
Footnotes
1 Specifications for non-U.S. markets might differ. Buell reserves the right to discontinue models or change specifications at any time without incurring any obligations. Vehicle specifications may vary from country to country depending on local laws. Some models are not available in certain countries.
2 Hibrex® and Flexten® are registered trademarks of Veyance Technologies, Inc.
3 Showa®, Dunlop® and Pirelli® are registered trademarks of their respective owners.
4 Availability may vary from dealer to dealer, and is subject to change without notice.
5 Unladen, wet configuration (no rider, all fluids).
6 Laden, wet configuration (design rider, all fluids).
7 Without mirrors.
8 Bottomed-out configuration (100% suspension compression).
9 Oil capacity at oil change with filter.
