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Best Balance of Displacement & Riding Posture: GSX750S KATANA Custom

 8 min read

OHNO SPEED's GSX750S KATANA

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This is the Japanese-spec Suzuki GSX750S1, one of OHNO-SPEED's works. Not only wheels, frame, engine and carburetor are remained as stock.Furthermore, there are no fins under the cowl, and the handlebars are the stock up-type of the S1.

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As mentioned above, this bike consists almost entirely of stock 750S1's parts. However, the heavy clutch is dramatically lighter than before, or as light as the recent bikes. Better brake precision and touch. The seat with moderate firmness makes the riding position more relaxed. Steering is slim and moveable widely, without the weighty feel of the GSX1100S's clamped handles, and handle grip also fit your hands naturally. This custom is thus very easy to ride in a city, and should be able to be ridden a lot without hesitation. In terms of difficulty of this bike, the engine and another parts have been discontinued in most cases, so you may need to pay a lot for them. The front forks are stock, but slightly modified. For rear, NITRON's suspension is installed and raised 20mm with lower adapters. Tires are ContiClassicAttack, 120/90 size in the rear. The rear fender is removed to solve an interference with the tire. There's also a small compartment. As a result of practice, the negatives caused by raising the tail too much in the katana were avoided, and this bike got a comfortable position, rear stroke, and recommended tires.

Bodyworks

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The windshield is produced by OHNOSPEED with the stock GSX1100S shape and sufficient thickness, and is coated with titanium. Headlights were changed to H4 LEDs to upgrade the brightness. The high-leveled clip on handles are 750S1 stock with forged aluminum, and the mirrors are stock as well.

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The carbon fiber tail cowling, which gives the bike a custom look, is made by OHNOSPEED and replicates the stock one, including the installation shape. OHNOSPEED's Big Fender Eliminator Kit fits inside, providing ample storage space and rear tire clearance.

Handle

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An initial adjuster was added to the Φ37mm front fork. The front master cylinder is a Nissin radial and the reservoir brackets are made by OHNOSPEED. The clutch lever kit is also by OHNOSPEED and is impressively light to operate.

Chassis

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The front brake caliper is converted to a Nissin opposed 4-piston using OHNO-SPEED TYPE-R310 caliper supports (A7075/90mm pitch) for GSX750S/1100S stock forks and wheels. In addition, the brake disc rotors have been changed to Sunstar for better braking power and control.

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The drivetrain is highly efficient with RK's H.C.S. premium sprocket/chain for 520 size conversion. Incidentally, the stock chain for the GSX750S1 is size 530 (630 for the 1100S). The rear shocks are mounted on the lower side with the 20mm size of OHNO-SPEED's special bracket for NITRON's Adjustable Suspension.

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The stock large-diameter rear brakes are balanced by OHNO-SPEED's prototype RACING Rear Brake Change Kit, which matches the strengthened front brakes. There are Φ220mm Sunstar Works expanded disc rotors + Nissin 2P calipers. The exhaust is Asahina's Titanium 4-1.

Gallery

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Specifications

Part Details
Exhaust ASAHINA RACING Egtech GP Formula Full Titanium Exhaust Short Type
Brake NISSIN Clutch Master Cylinder Kit Horizontal/Seperated Tank-Type
OHNO SPEED Adjustable Oil Tank Bracket
NISSIN 4 Pot Caliper
OHNO SPEED Caliper Support Type-R
SUNSTAR Premium Racing Front Disc Rotor
OHNO SPEED Racing Rear Brake Change Kit
NISSIN 2 Pot Caliper
SUNSTAR WORKS EXPAND Rear Disc Rotor
Suspension OHNO SPEED Full Adjustable Top Cap Kit for ANDF Forks
NITRON Rear Suspension Twin Shock Stealth Twin Series
Drive System RK High Carbon Steel Premium Sprocket
RK JAPAN 520 XXW Drive Chain
Handle / Steering OHNO SPEED Light Clutch Holder Black Edtion
Bodyworks OHNO SPEED Racing Windshield Titanium Coading
OHNO SPEED Tail Cowl
OHNO SPEED BIG Fender Eliminator Kit Black

About OHNO SPEED

OHNO-SPEED produces original parts mainly for Suzuki's famous "KATANA" and GS series. All of the parts are made with the know-how of a famous tuner, and are of high quality and sturdy construction. They have also been making custom parts for the current KATANA.
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OHNO SPEED brand page

Original Source of this Article

Heritage & Legends

Hakuyo
Hakuyo

editor

Hakuyo

A foreigner who rides in Japan, Japanese call this "Gaijin Rider". Third year in the Webike global team. He feels and shares the real bike life in Japan then presents you how interesting Japanese customs are.