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Low and Smart Appearance with Clip-ons: Z1 Custom

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 5 min read

BULL DOCK's Z1 [900SUPER4]

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This is Z1 full custom by BULL DOCK. It has a low and smart appearance with clip on handlebar and is presented in green and black.

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The chassis has been optimized for 17-inch wheels, and the ride height is adjusted according to the tire size. It is clear that this bike can be enjoyed for both touring and daily use.

Handle

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Clip on handlebar is set naturally. The clutch drive is hydraulic, and the left and right master cylinders use Brembo RCS.

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Yoshimura PROGRESS Meter is set on the stock meter. Mccoy Stem is suitable for 17-inch & Φ43mm forks.

Bodyworks

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The seat is Mccoy Supreme, which improves ride comfort and bike maneuverability.

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The rearsets are billet aluminum Mccoy. The engine can also be seen with outboard & offset sprockets.

Engine

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BULL DOCK works on the engine from combustion machining to precision assembly by themselves. Displacement is 1135cc, using PISTAL RACING's forged piston. The cylinder head has an oil bypass line, and the camshafts are Yoshimura's hollow type ST-L1. The transmission is the original 5-speed cross, and the oil pump is a Mccoy gear type, which is now indispensable. A round oil cooler was also added.

Intake & Exhaust

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KEIHIN Φ35mm FCR carburetor is selected for easy setting.

Chassis

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Front forks are OHLINS RWU. Front brake is consist of Brembo monobloc GP4-RS caliper and SUNSTAR premium racing disc. Stock wheels whose sizes are 1.85-19 front and 2.15-18 rear has been replaced with forged aluminum Lavorante 3.50-17 and 6.00-17.

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Rear brake consists of Brembo P2 34 caliper and SUNSTAR premium racing disc. The exhaust system is also a full titanium WinMccoy.

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The rear shocks are OHLINS Legend Twin. Swingarm is Mccoy 7N01, which is handmade. The rear fender is made with carbon fiber.

Gallery

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Specifications

Part Details
Engine PISTAL RACING Forged Piston Φ74mm
YOSHIMURA ST-L1 Camshaft
BULL DOCK Mccoy 5-speed Cross Mission
BULL DOCK Mccoy Oil Pump
Carb / Intake KEIHIN FCR Φ35mm Carburetor
Exhaust BULL DOCK Mccoy Titanium Full Exhaust
Frame BULL DOCK Mccoy Swingarm
Brake Brembo 14RCS Radial Brake Master Cylinder
Brembo Radial Mono Block Caliper Kit GP4-RS
SUNSTAR PREMIUM RACING Front Disc Rotor
Brembo P2-RS84 Rear Brake Caliper P2 34 84mm
SUNSTAR PREMIUM RACING Rear Disc Rotor
Wheels BULL DOCK LAVORANTE 3.50-17 Front
BULL DOCK LAVORANTE 6.00-17 Rear
Suspension OHLINS RWU Front Forks
OHLINS Legend Twin
Steps BULL DOCK Rearsets
Drive System BULL DOCK Outboard & Offset Sprocket Set
Handle / Steering Brembo 19RCS Radial Clutch Master Cylinder
BULL DOCK Stem Kit
YOSHIMURA PRO-GRESS2 Multi-temp Meter
Seat BULL DOCK Mccoy Supreme Seat
BULL DOCK Mccoy Carbon Rear Inner Fender

About BULL DOCK

We have also released an article on BULL DOCK to our "BWK" series, so check the links below.
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BULL DOCK 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.