Yoshimura Katana 1135R

From MCN website;

Yoshimura has got hold of five of the last Suzuki Katanas to be built and is turning them into jaw-droppers.

After 20 years of continuous production, Suzuki has finally pulled the plug on the Katana, which has remained virtually unchanged since the prototype version was shown at the Cologne bike show in 1980.

Yoshimura has grabbed five of the last " Final Edition " and made them into the Yoshimura Katana 1135R.

It features many of the parts Yoshimura has developed over the years to help Katana owners keep up with the latest sports bikes. As the name suggests, the engine has been treated to a big-bore conversion – increasing the capacity to 1135cc – along with a range of internal alterations. These include new carburettors as well as new pistons, con-rods and camshafts.

The extra-big oil cooler and full, titanium Yoshimura exhaust hint at the engine’s potential power. Suzuki’s oil-cooled GSX motor – which also formed the basis of the legendary GSX-R1100 – has long been renowned as one of the most tuneable engines ever made, and with Yoshimura’s expertise, the output of the 1135R should be over 150bhp at the rear wheel.

To reduce weight, the fuel tank has been swapped for a hand-beaten aluminium version which, along with the use of lightweight carbon fibre for parts like the front mudguard, helps cut the weight to less than 200kg (440lb).

To cope with the extra performance, Yoshimura has fitted a braced alloy swingarm instead of the stock steel tubular design. The swingarm is sprung by a pair of fully adjustable Ohlins piggyback shocks, while the forks have also been reworked to improve the handling.

 

Specifications

Weight Stock 241.2kg > Yoshimura 197.8kg
Horsepower Stock 95ps > Yoshimura over 150ps
Engine Parts,
Accessories & Engine Modification
74mm Yoshimura Piston Kit
ST-1 Camshaft
Original Hand Bent Titanium Exhaust System
Yoshimura Mikuni TMR-MJN 40mm Carburetor
Throttle Holder & Handle Grip
Carburetor Carbon Heat Shield
Original Oil Cooler
Magnesium Engine Cover
Magnesium Cylinder Head Cover
Oil Breather Tank
Clutch Spring
Original Generator Cover (Titanium Cover on Top)
Cylinder Head Porting
Cylinder Boring
Grinding
Chassis Parts,
Accessories & Chassis Modification
Frame Modified & Painted
Carbon Front Fender
Original Aluminium Lighten Fuel Tank
Original Triple Clamp (Serial Number Sealed)
Original Rear Sets
FFVS Front Fork Unit & Rear Suspension (Yoshimura Setting)
Speed Flow Brake Hose (Front & Rear)
Original Seat ÒJOYÓ Special
Small Type Turn Signal
Front Brake Caliper & Light Weight Rear Brake Caliper
Disk Brake
Small & Light Weight Battery
Original Swing Arms
Magnesium Light Weight Wheel
RK 520 Chain
AFAM Sprocket
STUCK Racing Speed Meter & Yoshimura original Bracket
Speed Meter Sensor Bracket
MAGICAL Original Carbon Mirror
License Plate Holder
High-Grip Tires
Side Stand Modified
Electrical Parts Electrical Parts & Plate Modified
Original Wiring Harness
Digital Single Temperature Gauge

Pictures from the Tokyo Motor Show

Pictures from a Japanese Magazine