• Compact 72-degree DOHC V-Twin engine places more engine mass along the centerline of the motorcycle, and allows the engine to be located further forward in the frame..
• Massive aluminum frame spars double as a 5.6-gallon fuel reservoir, to carry fuel lower on the chassis..
• Radiators are mounted longitudinally between the front wheel and the frame. This radiator location also allows the engine to be positioned further forward in the frame..
• The muffler is located below the engine, rather than high and behind the rider.

• A new-generation Intuitive Response Chassis (IRC) is optimized for torsional stiffness..
• The engine is solid-mounted to the frame and acts as a structural member..
• The swingarm pivot point is located in the engine case structure, creating a more-rigid connection between the front and rear wheels..
• First OEM spec 47 mm inverted front forks with reduced friction seals are secured in rigid triple clamps.

• New Buell ZTL2 front brake system, utilizing a single disc and new cast caliper assembly with four pads, is approximately six pounds lighter than twin disc brakes..
• The New Buell ZTL2 front brake transmits forces from the rotor directly to the rim, so torsional load acting on the rest of the wheel is virtually eliminated. This permits the use of a very lightweight front wheel hub and spoke configuration that reduces steering inertia..
• The rear brake caliper is mounted directly to the swing arm eliminating the typical brake carrier and an additional 1.5 pounds of unsprung weight..
• A reinforced Goodyear Hibrex final drive belt with Flexten Plus technology weighs just 1.06 pounds, compared to drive chains that weigh four to five pounds.

• 72-degree cylinder angle and a very compact case and cylinder head design allow the engine to be located far forward in the chassis, distributing 54 percent of the vehicle weight on the front tire..
• The 72-degree V-angle provides a steep 18-degree valve angle and straight path for the down-draft intake system..
• A cylinder angle of 72 degrees reduces shaking forces. The engine is also fitted with three balance shafts: two balancers for canceling primary rotating imbalance and a third balancer for canceling the rocking couple..
• The displacement of 1125cc was chosen to create an optimal 103.0 mm bore x 67.5 mm stroke configuration – generous bore for more valve area and better breathing and short stroke for reduced friction, increased rpm range and instant throttle response..
• The engine has a low-inertia flywheel for a quick-revving performance and smooth shifting..
• The engine is a stressed member of the frame and contributes to overall chassis rigidity. The swing arm pivot is located in the engine cases providing optimal pivot location and adding to overall chassis rigidity..
• Dual overhead cams with self-adjusting chain drive on each cylinder to the intake cam and gear drive from the intake to the exhaust cam. This design requires less space over the cylinder head than a two-sprocket design, allows the engine to be located further forward, and reduces engine weight..
• Valves are actuated with finger followers and adjusted with shims, a design derived from Formula 1 engine technology..
• Finger follower valve actuation reduces friction, permits a quicker valve opening, and eliminates valve float. This design also allows a steep valve angle of 18 degrees and a downdraft fuel injection system. The design of the follower retention system makes shim replacement quick and easy, reducing maintenance costs. Valve covers are magnesium to reduce weight..
• Primary balancing with three internal shafts reduces chassis weight by minimizing vibration isolation requirements..
• Dry sump oiling reduces internal windage losses. An integrated oil reservoir is located in the lower left side of the crankcase casting to lower the center of gravity and help keep the engine compact..
• Buell DDFI3 EFI is a closed-loop system for precise mixture control, resulting in smoother throttle operation and better fuel economy. Dual downdraft 61 mm throttle bodies provide superior intake air flow. A new ECU controls the TPS, IAC, and monitors engine performance while continually adjusting to the environment..
• Ram-air system pressurizes the air box for a gain in peak performance. The air intake is located between the front fork legs and below the fairing. Air flow to this area and the size and shape of the intake were optimized using computational fluid dynamics (CFD) models. The 12-liter airbox is designed to accommodate a large air filter and to be easy to service..
• Twin side-mounted free flowing radiators are mounted longitudinally within aerodynamic cowlings. The position of the radiator system lowers the center of gravity and centralizes mass, and allows the cowlings to direct free-flowing air to each radiator. The cowlings have an internal vane (splitter) to split airflow efficiently and were designed with computational fluid dynamics (CFD) models to optimize air flow at all speeds and to create a pressure differential around the radiator to pull air through the core. Hot air is also exhausted away from the rider for enhanced comfort..
• The exhaust system features a large-volume muffler mounted below the engine to optimize cg location and mass centralization. The muffler is tuned to produce a linear horsepower and torque curve without the added cost, weight and complexity of an active exhaust system. A Helmholtz chamber within the muffler further reduces noise output. Twin brushed stainless exhaust outlets produce less exhaust noise than a single side-mounted outlet.

• An all-new Buell IRC (Intuitive Response Chassis) is made in the USA and is the stiffest chassis ever offered by Buell. Its rigidity is aided by the engine, which is a rigid stressed member of the chassis..
• The inner frame incorporates air-flow channels that create a low-pressure area behind the engine to draw hot air out the rear of the motorcycle..
• Utilizing patented Buell Fuel in the Frame technology, the aluminum frame spars double as a 5.6-gallon fuel reservoir..
• The stiffness of a new cast-aluminum swing arm has been tuned for the 1125R..
• The pivot point of the cast-aluminum swing arm is located in the engine cases to create a more rigid connection between the rear wheel, the frame, and the front wheel..
• By placing the swing arm pivot point forward in the engine cases, the anti-squat properties and suspension control of the 1125R were optimized..
• The rigid connection to the engine was used to optimize the stiffness of the swing arm in relation to the overall chassis..
• A fully-adjustable Showa rear shock/spring unit features an external piggyback reservoir for good heat dissipation..
• To reduce weight, the shock is mounted directly between the frame and the swingarm without linkage, and its off-center placement optimizes airflow through the motorcycle..
• Fully-adjustable Showa 47mm inverted front forks and new triple clamps stiffen the torsional response of the front end and improve steering response..
• A new fixed bushing slides against the hard-chrome surface of the fork tube, reducing friction..
• Compression adjustment can be made with a simple hex-key tool..
• Wheelbase is 54.5 inches; rake is 21 degrees and trail is 3.3 inches.

• New Buell ZTL2 (Zero Torsional Load) front brake utilizes an eight-piston caliper based on a design developed for the Buell XBRR production racing motorcycle..
• The eight-piston design offers a larger pad surface, optimizes heat-dissipation capability and allows even pressure distribution over each of the four pads in the caliper..
• The caliper casting was optimized for clamping stiffness, yielding a more progressive and connected braking feel to the rider..
• A single 375 mm stainless steel rotor is mounted directly to the wheel rim. This design produces outstanding stopping power and weighs less than a dual-disc system..
• And because braking forces are transmitted directly from the rotor to the rim, torsional load acting on the rest of the wheel is virtually eliminated. This permits the use of a very lightweight front wheel that also helps reduce steering inertia..
• The rear brake utilizes a 240 mm stainless steel rotor gripped by a two-piston caliper..
• The caliper is mounted directly to the inner surface of the swing arm, so it is hidden from view and also weighs 1.5 pound less than a typical rear-brake design..
• Front and rear brakes are fitted with braided steel brake lines for optimal feel and braking performance..
• The front brake hand control is adjustable for reach..
• The rear brake foot control is adjustable for reach, and the toe piece is adjustable to match rider foot size.

• HVA (Hydraulic Vacuum Assist) Slipper Action clutch features hydraulic actuation from the hand control with assistance from engine vacuum for lighter clutch effort..
• The vacuum assist also produces the same effect as a "slipper" clutch for more controlled engine braking during high-speed downshifts..
• A six-speed, close-ratio transmission is an oblique stacked configuration that is tilted to minimize overall powertrain length and allows the engine to be optimally placed within the chassis..
• Gear ratios were selected to allow the engine to remain within its optimal power band at typical operating speeds..
• A Goodyear Hibrex final drive belt with Flexten Plus technology weighs just 1.06 pounds, compared to drive chains that weigh four to five pounds. The belt system is clean, quiet and extremely strong.

• Quiet Zone cockpit aerodynamics were developed using computational fluid dynamics (CFD) models and experience gained in development of the Buell XBRR production racing motorcycle. The shape of the fairing and windshield optimize air flow over and around the rider for reduced drag and enhanced rider comfort..
• Computational fluid dynamics (CFD) models were also used to design the efficient, aerodynamic shapes of the radiator cowlings, which direct radiator heat away from the rider..
• The fairing incorporates a six-bulb headlight system for brilliant road illumination at night. Two bulbs are illuminated in daylight running mode for enhanced visibility in traffic..
• LED turn signals are incorporated in the aerodynamic mirror housings where their placement and brilliance are more visible to other drivers.

• The Buell 1125R offers an athletic rider position with a foot peg location that provides 50-degree lean clearance in cornering situations..
• Quiet Zone cockpit aerodynamics optimizes air flow around the rider..
• Brake and clutch hand controls are adjustable for reach..
• Foot controls (brake and shifter) feature toe pegs that adjust to rider foot size..
• Wiring harness is pre-wired for accessory heated hand grips..

Instrument cluster features:

• Large analog tachometer.
• Digital speedometer on an LED screen visible within a 50-degree angle of view.
• ODIS (Onboard Diagnostic Information System) displays service codes.
• Four-digit security code system immobilizes the ignition.
• Lap timer and splits.
• Ambient air temperature.
• Coolant temperature.
• Two trip odometers.
• Instantaneous miles per gallon.
• Average miles per gallon.
• Low fuel indication with trip count.

• Bodywork: Midnight Black
• Wheels: Diamond Blue
• Frame and Swingarm: Diamond Blue
• Engine Trim: Fusion Bronze