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Suzuki GSX1100S KATANA Custom by SD-BROS MOTORCYCLE

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 9 min read

Japanese Custom Culture

Here is an original series "JCC" stands for "Japan Custom culture" written by Webike Japan. There is no doubt that Japan has one of the best and unique custom parts and its culture in the motorcycle industry, but the language barrier has led to the closure of JDM motorcycle culture to the outside of Japan. Through this JCC contents, we present you one of a kind custom and mods bikes by professional craftmen and enthusiasts who just can't stop loving motorcycle.

SD-BROS MOTORCYCLE's GSX1100S KATANA

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SD-BROS in Aichi, Japan, whose main business is coating motorcycles with the coating agent CR-1. This Suzuki GSX1100S Katana is the property of a customer who has a long relationship with SD-BROS.

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According to Mr. Shudo, who is working at SD-BROS, the owner originally had another vehicle and was fully modifying it, but he changed his mind and wanted to ride on the Katana. The owner bought Final Edition, but Mr. Shudo recommended him to ride it without custom for the first 2 years, to make him understand the difference before and after he actually customize. The project started after that 2 years. When Mr. Shudo looked at the frame, the back of the frame was too rusty, and the engine was bad as well. Mr. Shudo thought to do something to the Katana so that it will last a lifetime. He upgraded the engine while keeping the Katana's originality. The concept was to improve the overall balance of the machine, not to have outstanding performance only in one area. The rusty frame was cleaned up and treated with Carbon Dry Pro-Tech (carbon laminated to the surface), and increased the displacement to 1135cc. In addition, Yoshimura ST-1 camshaft was installed with a TSS slipper clutch.

Handle

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The steering stem is a one-off for this bike with a 37mm fork offset (stock one is 50mm), and the top bridge has been reupholstered with a Final Edition's plate. The handlebars are Sansei Racing's clip-on handle, and the front master and the clutch holder / lever are Gale Speed's products. The gauges are made by Motogadget, with an analog tachometer on the outside and a multi-function digital gauge on the bottom.

Bodyworks

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The seat is To's Custom Supreme's product. The upper cowl and tail cowl are made of carbon produced by Shabondama, and the tank made by Beater is made of aluminum.

Chassis

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The rearset is the modified version of ZRX1200's rearset made by Agras. You can also see the Carbon Dry Protec process that wraps dry carbon around the frame surface.

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The front fork is Hyper Pro Φ43mm, and the six-spoke wheels are PMC Sword Matrix in 3.00-18/4.50-18 sizes front and rear.

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The swingarm made by Wheelie is pentagonal with a triple squared cross-section, and the rear suspension is Hyper Pro in a special order color. Brake discs are Sunstar, Φ310mm at the front and Φ220mm at the rear.

Engine

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The engine is 1135cc with Yoshimura Φ74mm pistons, Yoshimura ST-1 cams, Yoshimura DID cam chain, and a TSS slipper clutch. The frame is reinforced in three places: the laydown area, the bar that goes under the seat on both sides, and the bar on the pivot (the upper part of the pivot is a stock final edition).

Intake & Exhaust

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The carburetor is a TMR Φ40mm-MJN dual stack, and the exhaust system is a combination of TNK Engineering exhaust pipes + Maverick silencers. The Ignition is controlled by a Uotani SP-2.

Gallery

GSX1100S-KATANA_SD-BROS01.jpg GSX1100S-KATANA_SD-BROS02.jpg GSX1100S-KATANA_SD-BROS03.jpg
GSX1100S-KATANA_SD-BROS04.jpg GSX1100S-KATANA_SD-BROS05.jpg GSX1100S-KATANA_SD-BROS06.jpg
GSX1100S-KATANA_SD-BROS07.jpg GSX1100S-KATANA_SD-BROS08.jpg GSX1100S-KATANA_SD-BROS09.jpg
GSX1100S-KATANA_SD-BROS10.jpg GSX1100S-KATANA_SD-BROS11.jpg GSX1100S-KATANA_SD-BROS12.jpg

Specifications

Part Details
Engine Displacement: 1135cc
YOSHIMURA Φ74mm piston
YOSHIMURA Camshaft [ST-L1]
YOSHIMURA & DID Camchain
TSS Slipper Clutch Kit
Carb / Intake YOSHIMURA & MIKUNI TMR-MJN40 Carburetor (Side Link)
Exhaust TNK Engineering Exhaust Pipe
TNK Engineering Maverick Universal Silencer
Frame Shabondama Carbondry Protec Processing
Wheelie Triple-Squared Swingarm
Brake ACTIVE Caliper Support (BREMBO 40mm pitch & Large Rotor Diameter) offset 26.5mm
SUNSTAR Premium Racing Front Brake Disc Hole Type
BREMBO Rear CNC Caliper P2 34
SUNSTAR Premium Racing Rear Brake Disc Hole Type
Wheels PMC Sword Matrix
PMC Forged Aluminum Wheel SWORD-Matrix
Suspension HYPERPRO AH1 Front Fork Ver1.2
HYPERPRO Twin Shock T367 Piggyback Constant Rising Rate
Handle / Steering SANSEI RACING Endurance Steering Kit
GALESPEED Radial Mount Master Cylinder
GALESPEED Wire Clutch Holder Kit
Motogadget Analog Tachometer Chrono Classic
Seat To's Custom Supreme Seat
Bodyworks Beater Aluminum Tank
Shabondama Carbon Upper Cowl
Shabondama Carbon Tail Cowl
Electrical AS Uotani SPII Full Power Kit

About SD-BROS MOTORCYCLE

At SD-BROS MOTORCYCLE, they will take care of your beloved bike is an essential part of motorcycle life, and that maintaining bikes filled with love and care in beautiful condition is the most important thing. SD-BROS MOTORCYCLE is a store that helps you to color your bike life.

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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.