Suzuki GSX 1300R Hayabusa

The Suzuki Hayabusa has firmly established its status as motorcycling’s Ultimate Sportbike. The 2023 version of Suzuki’s flagship sportbike is propelled by a muscular, refined inline four-cylinder engine housed in a proven and thoroughly updated chassis with incomparable manners, managed by an unequaled suite of electronic rider aids within stunning aerodynamic bodywork that is distinctly Hayabusa.

Riders who have owned or longed for a Hayabusa will recognize the iconic, aerodynamic silhouette that has been polished through wind tunnel sessions so the body features vent shapes, air diffusers, and reimagined logos while a sophisticated LED lighting system becomes the zenith of style and function.

The torque-rich 1,340cc engine effortlessly delivers a strong wave of power so the Hayabusa accelerates quicker and smoother than ever before, while complying with worldwide emissions standards. Rider control is unmatched because of the Hayabusa’s Suzuki Intelligent Ride System (S.I.R.S.). The engine’s adjustable power delivery, traction control*, cruise control, launch control, quick shift, and Motion Track ABS** and Combined Brake systems offer the Hayabusa rider unmatched options on how they want their ride to unfold.

This generation of Hayabusa has 550 new or redesigned parts over its predecessor, all with a focus on delivering the ultimate and balanced sportbike experience. All eyes turn to the Suzuki Hayabusa as it remains a testament to Suzuki’s century of dedication to creating art while building the best performing product that is unmatched in quality, reliability, and value. The Hayabusa, like its namesake peregrine falcon, soars above all once again.

Engine

The powerful, 1,340cc, inline-four-cylinder, liquid-cooled, DOHC engine supplies a seamless surge of torque for effortless acceleration.

Specialized crankcase assembly hardware and a modern tightening procedure is used to increase engine rigidity and durability.

Suzuki Composite Electrochemical Material (SCEM) cylinder coating improves heat dissipation, durability, and ring seal. The three-ring, aluminum-alloy slipper pistons have been shaped and reduced in weight (weight of each piston was reduced by 26 grams). Conical machining at the piston pin bores improves strength and durability.

Like the crankcase, the crankshaft has high flow oil passages to increase lubrication at several key areas.

With lower mass than the prior generation parts, the crankshaft, connecting rods and pistons reduce internal vibration, which in turn contributes to greater engine durability.

The design of the Twin Swirl Combustion Chamber (TSCC) in the cylinder head was updated in this generation engine to promote faster and more efficient burning of the fuel-air mixture. This update complements other valve train updates, increasing flow coefficient by 5% to improve combustion efficiency.

Lightweight titanium valves with high-rate valve springs ideally match the camshafts to maintain accurate valve control.

Fired by independent ignition coil-caps in each cylinder, iridium spark plugs produce more complete combustion and last longer than conventional plugs.

The fairing design permits high air flow through the radiator, increasing cooling efficiency as compared to the prior generation Hayabusa. Air flow is increased by 8% when the Hayabusa is in motion and is approximately 7% better when the cooling fan is moving air during low- to mid-speed riding.

Positioned below the main radiator, a large-capacity air-cooled oil cooler reduces engine oil temperatures throughout the crankcase.

The electronic throttle bodies have tapered 43mm bores and are part of a high-flow intake system (intake pipe, throttle body and air cleaner funnel) that is 12mm longer than the prior generation Hayabusa to boost power at low-to mid-range engine speeds.

The throttle bodies use four primary fuel injectors that spray a fine mist of fuel directly into the intake pipes. Four additional Suzuki Side Feed Injectors (S-SFI) are set above the throttle body in the side of the intake funnels. These side injectors spray a fine mist of fuel on a reflecting plate at the top of the throttle body, resulting in a 2% increase in power and torque output in the low- to mid-range.

The two Suzuki Ram Air Direct (SRAD) intake ducts in the upper fairing route high-pressure, fresh air to the air cleaner boosting performance in a linear fashion as the road speed increases.

Suzuki Pulsed Secondary Air Injection (PAIR) system introduces fresh air into the exhaust to ignite unburned hydrocarbons (HC) to reduce carbon monoxide (CO) emissions.

The four-into-two-into-one-into-two exhaust system configuration uses connecting pipes from the #1 and #4 head pipes to help deliver more power and torque at low- to mid-range speeds. Like the prior generation exhaust, a connector pipe connects the #2 and #3 head pipes for similar benefits.

The body of the exhaust silencers (mufflers) will change in color and hue over time in response to the way the bike is ridden. This makes it possible for each rider to add a unique personal touch to his or her Hayabusa.
Using techniques developed for the GSX-R1000, the crankcases have lubrication passages that provide 54% more oil flow to the crankshaft than the prior generation engine to help increase durability.

U-shaped cutouts in cylinder’s bores allow crankcase pressure created by descending pistons to escape to adjacent cylinders to reduce internal pumping pressure and mechanical power losses.

The chrome nitride Physical Vapor Deposition (PVD) piston ring coating is harder and smoother than conventional chrome plating, reducing friction while improving sealing to the SCEM-coated cylinder.

The connecting rod design that reduces weight (by 3 grams each rod) from the prior generation part while also increasing rigidity.

A gear-driven balancer shaft is timed to the crankshaft to help minimize vibration to the engine and the rider.

The exhaust camshaft’s valve list is higher than the prior generation engine and the timing for both camshafts has been tuned to reduce valve opening overlap, boosting low- to mid-range engine performance. Wide camshaft’s lobes improve valve train lubrication and durability.

The cam chain tensioner design minimizes chain runout and uses a Teflon coating on the slipper surface to reduce mechanical loss.

A curved radiator with a compact, dense-core design and two ECM-controlled electric fans keep the engine temperature stable.

To allow the cooling fans to spin down when stopping in traffic, reducing warm air flow to the rider, the cooling fan blade pitch has been optimized and matched to a smaller fan shroud.

The Hayabusa is equipped with Suzuki’s Ride-by-Wire Electronic Throttle body system which provides light, natural response with linear control like that of a conventional throttle.

Because the ECM controls the action of the throttle bodies, other features can be precisely controlled, such as cruise control, launch and lift control, the bi-directional quick shift system, cold-start up and idle speed control, and simplified service procedures.

The more compact throttle bodies made it possible to increase the air cleaner assembly’s capacity from 10.3 liters to 11.5 liters, increasing the air supply to the engine. The air cleaner has a rigid lid with a simplified internal structure that enhances the intake air sound quality.

The two Suzuki Ram Air Direct (SRAD) intake ducts in the upper fairing route high-pressure, fresh air to the air cleaner boosting performance in a linear fashion as the road speed increases.

The exhaust system is 4.5 pounds (2,054 grams) lighter than the prior system with silencers styled to complement the Hayabusa’s overall look. The silencers also have more capacity for better performance and have been tuned to emit a more exciting sound off idle and at lower speeds.

The new exhaust has high-flow catalyzers in the mid-pipe and within each silencer to further reduce HC, CO, and nitrogen oxide (NOx) emissions. Dual O2 sensors provide instantaneous feedback to the ECM for smooth, clean EFI operation.

Driveline Features

The Hayabusa’s six-speed, close-ratio, and constant-mesh transmission can be shifted conventionally or with the bi-directional quick shift system allowing the rider to select racing-style, conventional, or casual riding clutchless shifts.

Hydraulic clutch activation further reduces the lever pull while providing the rider a good sense of the clutch’s friction zone.

Oil jets in the crankcase spray lubricating oil on the fourth, fifth, and sixth gears to reduce friction, wear, and mechanical sounds during high-speed operation.

The gearshift cam, end plate and stopper design provide precise operation with the quick shift system while giving the rider a smooth and direct shift feel.

Developed for the Hayabusa, the unique and strong RK® GB50GSVZ4 drive chain has larger pins and rollers for reliable and quiet operation.

The Hayabusa has the latest version of the Suzuki Clutch Assist System (SCAS) clutch that delivers a lighter clutch lever pull than ever before. SCAS serves as a back-torque-limiting system for smooth downshifts while increasing plate tension during acceleration to ensure engine power is effectively transmitted to the rear wheel.

The Hayabusa’s six-speed, close-ratio transmission was developed to match the engine’s performance while improving durability and simplifying service.

The longer countershaft accommodates the new-generation SCAS-style clutch and uses longer needle bearings to increase durability. The clutch pushrod length updated to match the countershaft change.

To simplify service, a unique transmission retainer system is used in the crankcase.

Chassis

The Hayabusa’s twin-spar aluminum frame and swingarm incorporate aluminum castings along with extruded aluminum sections that provide the right amount of suppleness and strength to its overall rigid alloy frame structure.

Visually matching the Hayabusa’s styling, the grab rail is reshaped and set in proximity to the rear seat so it is easy for the passenger to grasp.

Weighing 1.5 pounds (700 grams) less than the prior generation’s part, the redesigned sub-frame is made of longer rectangular steel tubing for ample weight-carrying capacity.

The fork has spring preload plus rebound and compression damping force adjusters so the rider can tune the suspension response to their preference.

Like the fork, the internal structure of the KYB® rear shock absorber was designed to help optimize comfort and straight-line stability.

A steering damper attached to the frame and the lower fork bracket provide damping force to suppress unwanted vibration and steering forces, but are tuned to provide a light steering feel at lower speeds.

Co-developed by Suzuki and Bridgestone®, the Hayabusa is shod with Battlax Hypersport S22 tires in120/70ZR17M/C (58W) front and 190/50ZR17M/C (73W) rear sizes.

The Hayabusa provides the rider extraordinary control of braking with the Combined Brake System, and the Motion Track Antilock Brake System (MT-ABS).

- With the Combined Brake System the rider can operate the brake with more confidence as operating the front brake lever will provide braking power to both the front and rear brakes.

- The advanced ABS-unit has a lightweight, compact design. Antilock brakes enhance braking performance by matching stopping power to available traction which helps prevent, to a certain extent, wheel locking due to changes in road conditions or excessive braking.

- This ABS-unit combines IMU-measured, spatial information of the motorcycle’s posture in conjunction with front and rear wheel speeds. This allows the MT-ABS to not only activate in a straight line but also when the vehicle is leaning or turning.

The Stylema® front brake calipers are paired with a pair of 320mm diameter stainless-steel full-floating discs with a hole pattern that further helps optimize cooling efficiency.

The floating handlebar mount helps minimize vibration, while the upper clamp incorporates a distinctive Hayabusa logo.

The rider footrests have damped mounting hardware to reduce vibration and are set in a sporty, yet comfortable relationship to the handlebars and seat. The heel guards incorporate replaceable plastic inserts that can be changed to renew their appearance.

The Hayabusa’s black-anodized, adjustable clutch and front brake lever have carefully crafted shapes to aid rider control and feature slots at the ends to reduce the chance of wind pressure pushing the levers inward.

The rear seat is set higher than the front seat so the passenger can enjoy a forward view over the rider’s shoulder.

The passenger seat and grab rail can be replaced by an optional, color matched single seat cowl that acts as a lumbar stop for the rider during solo rides while adding to the Hayabusa’s performance-related style.

The 2023 Hayabusa is offered in a trio of two-tone body color schemes:

Pear Vigor Blue & Pearl Brilliant White form a visually stunning white motorcycle with deep blue accents in key locations that emphasize the Hayabusa’ sculpted form.

Metallic Matte Black & Glass Sparkle Black uses the offset between flat and glossy black paint to create a dark image of strength.

Metallic Thunder Gray & Candy Darning Red occupies a space between the bright white and dark black of the other schemes. The gray base color provides definition to the Hayabusa’s body with red accents placed in the various intake and exhaust vents in the bodywork.

Source: Suzuki Motorcycles