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High-end Complete Machine: ZEPHYR1100 Custom

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 7 min read

BULL DOCK's ZEPHYR1100

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The beautiful ZEPHYR1100 in black and blue with tiger lines is one of the GT-M (Genuine Tuning Machine), a full customization by BULL DOCK. It has a certain charm that attracts people's attention at first glance.

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The ZEPHYR1100 with 17-inch front and rear wheels has a slightly upward caster angle, but if the swingarm position is angled or raised using the rear suspension to maintain the rear ride height accordingly, the bike would not move well. Therefore, in this custom, the tires are replaced with larger ones, 200/55. In addition, the rear axle position was moved down and the lower mount of the suspension was positioned slightly forward to secure the rear height. The front height was also raised using 815mm long ZEPHYR1100 forks with no protrusion. The exhaust system has a 4-2-1 layout, so the bank angle and ride height were adjusted accordingly to achieve the ideal shape. It turns very well and is so light that it is hard to believe it is a ZEPHYR. Everything that could be done with the ZEPHYR was put into this custom. The natural look of the air-cooled Z GT-M with heavy customization is incorporated in this ZEPHYR custom, from parts to dimensions.

Engine

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The oil cooler has been replaced with a thin round type, and BULL DOCK original vertical front blinkers are mounted on both sides of it.

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The twin-plug head engine, which is black to match the other parts, is 1260cc and has CP 80mm pistons. The camshafts were replaced with Yoshimura ST-1. And the transmission is a Mccoy 6-speed close which can be adjusted well in a neutral gear with smooth operation.

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The carburetor is TMR-MJN, Φ38mm, of the Dual Stack Funnels version. Its funnels are also black to match the engine color.

Handle

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The left and right master cylinders are both Brembo RCS, and the carbon mirrors are Magical Racing NK-1 mirror type 1 heads.

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The steering stem is Mccoy, which is suitable for 17-inch wheels, and the front forks protrude 0mm. White meters are retained and packed in a black case to enhance their contrast. Additionally, Yoshimura PRO-GRESS2 and PROTEC gear position indicators are installed.

Chassis

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The front forks are OHLINS RWU, and the front brake consists of a HEL radial mount 4P caliper and a SUNSTAR Premium Racing brake disc rotor.

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The rear brake also consists of HEL calipers and SUNSTAR Premium Racing discs. The exhaust system is BULL DOCk WinMccoy full titanium 4-2-1.

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Rear shocks are OHLINS Blackline. The swingarm is Wheelie, with the rear axle positioned lower and the shock mounts forward to secure the rear height. The wheels are the Lavorante painted in black, 3.50-17 for the front and 6.00-17 for the rear. They are made of forged aluminum and are as light as magnesium. The drive chain has been converted to 520 size by RK.

Gallery

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Specifications

Part Details
Engine CP PISTONS Φ80mm Piston Kit
YOSHIMURA ST-1M Camshaft
BULL DOCK Mccoy 6SPEED Close-ratio Transmission
Carb / Intake YOSHIMURA TMR-MJN Carburetor Φ38mm
YOSHIMURA Dual Stack Funnel System Basic Kit for TMR
Exhaust BULL DOCK Win Mccoy Full Exhaust System
Frame WHEELIE Square Cross Swingarm
Brake BREMBO RCS Radial Brake Master
HEL Front Radial Brake Caliper
SUNSTAR Preminum Racing Front Disc Rotor
HEL Rear Brake Caliper
SUNSTAR Preminum Racing Rear Brake Disc
Wheels BULL DOCK LAVORANTE Sfidare 3.50-17(Front)
BULL DOCK LAVORANTE Sfidare 6.00-17(Rear)
Suspension OHLINS Upright Front Fork RWU
OHLINS Rear Suspension Black Line Series
Handle / Steering BREMBO RCS Radial Clutch Master
Magical Racing NK1 Mirror TYPE-1
BULL DOCK Mccoy Upside Stem Kit Standard Type
YOSHIMURA PRO-GRESS2 Multi-temp Meter
PROTEC SPI-K57 Shift Position Blinker Kit for ZEPHYR1100
Seat BULL DOCK Mccoy Supreme Seat

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.