Z1-R

The dawn of a new era of Z!
The Z1-R is All-New, Beautiful, and High Quality.

 
 

Performance that exceeds the first generation enables true sports driving.

 
 

JB-POWER tuning creates a magnificent motorcycle that is second to none!

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JB Power - Special Racing Parts - BITO R&D

Development & Concept

In 1978, six years after the launch of the legendary, timeless Z1, Kawasaki released the Z1-R as the new Z.

With its novel, linear appearance created by Kawasaki’s design genius, Mr. Tadahiro Kurishima, the Z1-R  represented a 180-degree turn from the Z1’s flowing curves inherited from the Mach series making it famous overnight. However, it was not only this revolutionary design but also the pedigree of the strongest, fastest, and highest-performing street motorcycle handed down from its predecessor the Z1, improved performance, and the consequently executed café-racer style that drew attention.

A 4 into 1 collector exhaust system, double brake discs on the front, and 18-inch wheels gave the Z1-R sufficient engine output and agility to surpasses the first generation Z and become the benchmark for the evaluation of liter machines in all aspects. The Z1-R was soon called “Kaku Z” (Edged Z) due to its unique design which would become the cornerstone for countless future Kawasaki models like the Z1000MK-II, Z1000R, ZRX, etc…

At BITO R & D, we began the creation of our JB-POWER Z1-R Complete Machine, in not only focusing on increased engine output but also reducing weight, improving rigidity, and correcting the center of gravity due to a light FRP front fairing, JB-POWER φ38 front fork, fork bridge (triple trees), swing arm, and forged magnesium wheels – MAGTAN. A milled aluminum JB-POWER riding step (rear set), seat modification, and handlebar improve the three key points that are deeply related to riding position resulting in a motorcycle of outstanding handling and performance. Certainly one of the best Zs ever!

Features

JB-POWER
MAGTAN JB3
3.00-18, Gold
JB-POWER
MAGTAN JB3
4.00-18, Gold
Sprocket 520-41
JB-POWER
Hand-Bend Titanium Exhaust System (4-1, Titanium Megaphone Silencer)
JB-POWER KEIHIN
FCR Carburetor φ35mm Alumite
JB-POWER
Milled Aluminum Intake Manifold Spacer
Milled Aluminum Air Funnel FCR with Net (Large, 35mm, Plain)
JB-POWER
Aluminum Oil Catch Tank (Box Type)
JB-POWER
Cast Iron Front Brake Disc (φ320mm, 6POT)
Radial Mount Brake Caliper 6POT (Brake Pads Included)
Milled Aluminum Radial Caliper Bracket
GOODRIDGE
Stainless Mesh Hose
EARL’S
Stainless Fittings
JB-POWER
Milled Aluminum Fork Bridge φ38mm Black Anodized (Offset 45mm, Usable Key Lock)
JB-POWER
Handle Bar (Black)
Milled Aluminum Handle Bar End (Black Anodized)
NISSIN
Brake Master Cylinder φ19mm
JB-POWER
Cowl Mount Bracket (Upper) Black Anodized
Cowl Mount Bracket (Under) Black Anodized
Lightweight FRP Bikini Cowl
Genuine Headlight Bracket Boring
JB-POWER KYB
Special Front Fork φ38mm (Black Bottom)
JB-POWER
Hollow Chromoly Front Axle Shaft (φ17mm)
DUNLOP
SPORTMAX α-14
110/80ZR18
JB-POWER
Oil Cooler Kit 13 Row, 330mm, Downwards, Black (Below Tank, Fitting, Hose, Adapter, Bracket)
JB-POWER
Special Tuned Engine (Displacement 1,105cc, Compression Ratio 11.0:1)
Forged Aluminum Piston Kit φ73mm
Cylinder Liner
Cylinder Liner Exchange, Boring, Upper Case Boring
Big Valve & Heavy Duty Valve Spring Kit
Cylinder Head Tuning (Valve Guide Exchange, Seat cut, Port Polishing)
Crank Shaft Special Overhaul (B/G Exchange, Center Alignment, Pin Welding, Conrod Weight Matching, Counter Weight Polish)
Small Auto Cam Chain Tensioner (Ratchet Type, for Reinforced Idler)
Milled Aluminum Kick Shaft Plug
Milled Aluminum Point Cover TYPE-B (BITO R&D)
Milled Aluminum Oil Filter Cover (Chromoly Bolt, O-ring Included)
YOSHIMURA
Camshaft ST-1
JB-POWER
Transmission Dog Undercut
WPC Coating (Gear, Drum, Shift Fork and Shaft)
FCC
Heavy Duty Clutch Kit
JB-POWER
Rear Floating Kit (Cast Iron Disc φ250mm, CP2696 Caliper…)
JB-POWER KYB
Rear Suspension (with Reserve Tank)
JB-POWER
Milled Aluminum Engine Mount Set (Black Anodized)
JB-POWER
Milled Aluminum Riding Step Kit (Master Included)
JB-POWER
Hollow Chromoly Pivot Shaft (Nut included)
JB-POWER
Special Frame Reinforcement (Lay Down and Black Powder Coating included)
JB-POWER
Aluminum Swing Arm (Square Chain Adjuster, Black Powder Coat)
JB-POWER
Hollow Chromoly Rear Axle Shaft (Nut included)
JB-POWER
Milled Aluminum Number Plate Holder (Black Anodized, Japanese Numberplates only)
DUNLOP
SPORTMAX α-14
150/70ZR18
JB-POWER
Milled Aluminum Racing Stand Hook (Black Anodized)
JB-POWER
Seat Cover Exchange and Foam Modification (Dimple)
D.I.D
Gold Chain 520
JB-POWER
Chromoly Engine Mount Bolt (Nut Included, Rear Upper, φ10mmx250mm)
JB-POWER
Chromoly Engine Mount Bolt (Nut Included, Rear Under, φ10mmx165mm)
Beater
Aluminum Tank
1
JB-POWER
Hand-Bend Titanium Exhaust System (4-1, Titanium Megaphone Silencer)
2
JB-POWER
MAGTAN JB3 3.00-18
Cast Iron Front Brake Disc (φ320mm, 6POT)
Radial Mount Brake Caliper 6POT
Milled Aluminum Radial Brake Caliper Bracket Set
Hollow Chromoly Front Axle Shaft (φ17mm)
GOODRIDGE
Stainless Mesh Hose
EARL’S
Stainless Fittings
DUNLOP
SPORTMAX α-14 110/80ZR18
3
JB-POWER
MAGTAN 4.00-18 Gold, Sprocket 520-41
Rear Floating Kit (Cast Iron Disc φ250mm, CP2696 Caliper…)
Aluminum Swing Arm (Square Chain Adjuster, Black Powder Coat)
Milled Aluminum Racing Stand Hook (Black Anodized)
Hollow Chromoly Rear Axle Shaft (Nut included)
DUNLOP
SPORTMAX α-14 150/70ZR18
4
JB-POWER KEIHIN
FCR Carburetor φ35mm Alumite JB-POWER Milled Aluminum Intake Manifold Spacer Milled Aluminum Air Funnel FCR with Net (Large, 35mm, Plain) Aluminum Oil Catch Tank (Box Type)
5
JB-POWER
Special Tuned Engine (Displacement 1,105cc, Compression Ratio 11.0:1)
Forged Aluminum Piston Kit φ73mm
Cylinder Liner
Liner Exchange, Boring, Upper Case Boring
Big Valve & Heavy Duty Valve Spring Kit
Cylinder Head Tuning (Valve Guide Exchange, Seat cut, Port Polishing)
Crank Shaft Special Overhaul (B/G Exchange, Center Alignment, Pin Welding, Conrod Weight Matching, Counter Weight Polish)
Small Auto Cam Chain Tensioner (Ratchet Type, for Reinforced Idler)
Milled Aluminum Point Cover TYPE-B (BITO R&D)
Oil Cooler Kit 13 Row, 330mm, Fittings Facing Downwards, Black (Below Tank, Fitting, Hose, Adapter, Bracket)
YOSHIMURA
Camshaft ST-1
6
JB-POWER
Transmission Dog Undercut
WPC Coating (Gear, Drum, Shift Fork and Shaft)
Milled Aluminum Kick Shaft Plug (Silver)
Milled Aluminum Oil Filter Cover (Chromoly Bolt, O-ring Included)
Milled Aluminum Engine Mount Set (Black Anodized)
Chromoly Engine Mount Bolt (Nut Included, Rear Upper, φ10mmx250mm)
Chromoly Engine Mount Bolt (Nut Included, Rear Under, φ10mmx165mm)
FCC
Heavy Duty Clutch Kit
7
JB-POWER
Milled Aluminum Fork Bridge φ38mm Black Anodized (Offset 45mm, Usable Key Lock)
Genuine Headlight Bracket Boring
Handle Bar (Black)
Milled Aluminum Handle Bar End (Black Anodized)
Lightweight FRP Bikini Cowl
Cowl Mount Bracket (Upper)
Cowl Mount Bracket (Under)
JB-POWER KYB
Special Front Fork φ38mm (Black Bottom)
NISSIN
Radial Brake Master φ19mm
8
JB-POWER
Milled Aluminum Riding Step Kit (Master Included)
Special Frame Reinforcement (Lay Down and Black Powder Coating Included)
Hollow Chromoly Pivot Shaft (Nut included)
JB-POWER KYB
Rear Suspension (With Tank)
9
JB-POWER
Seat Cover Exchange and Foam Modification (Dimple)
Milled Aluminum Number Plate Holder (Black Anodized, Japanese Numberplates Only)
Beater Aluminum Tank

SPECS

Exhaust
JB-POWER Hand-Bend Titanium Exhaust System
(4-1, Titanium Megaphone Silencer)
¥250,000
Wheels
JB-POWER MAGTAN JB3 F 3.00-18, R 4.00-18 Gold
Sprocket 520-41
¥350,000
Carburetor
JB-POWER KEIHIN FCR Carburetor φ35mm (Alumite)
¥204,000
Carburetor
JB-POWER Milled Aluminum Air Funnel FCR with Net
(Large, 35mm, Plain / x4)
¥7,500
Carburetor
JB-POWER Aluminum Oil Catch Tank
(Box Type)
¥18,000
Carburetor
JB-POWER Milled Aluminum Intake Manifold Spacer
¥24,000
Brakes
JB-POWER Cast Iron Front Brake Disc
(φ320mm, 6POT / x2)
¥75,000
Brakes
JB-POWER Radial Mount Brake Caliper 6POT Left
(Brake Pads Included)
¥98,000
Brakes
JB-POWER Radial Mount Brake Caliper 6POT Right
(Brake Pads Included)
¥98,000
Brakes
JB-POWER Milled Aluminum Radial Brake Caliper Bracket Set
(for JB Radial Mount Caliper)
¥50,000
Brakes
NISSIN Radial Brake Master φ19mm
¥20,000
Brakes
GOODRIDGE Stainless Mesh Hose
EARL'S Stainless Fittings (x2)
¥11,000
Brakes
JB-POWER Rear Floating Kit
(Cast Iron Disc φ250mm, CP2696 Caliper...)
¥184,600
Engine
JB-POWER Special Tuned Engine
(Displacement 1,105cc, Compression Ratio 11.0:1)
Please Ask
Engine
JB-POWER Forged Aluminum Piston Kit φ73mm
¥125,000
Engine
JB-POWER Cylinder Liner (x4)
¥9,500
Engine
Liner Exchange, Boring, Upper Case Boring
Please Ask
Engine
JB-POWER Big Valve & Heavy Duty Valve Spring Kit
¥130,000
Engine
Cylinder Head Tuning
(Valve Guide Exchange, Seat Cut, Port Polishing)
Please Ask
Engine
YOSHIMURA Camshaft ST-1
Please Ask
Engine
FCC Heavy Duty Clutch Kit
¥30,000
Engine
Crank Shaft Special Overhaul
(B/G Exchange, Center Alignment, Pin Welding,Conrod Weight Matching, Counter Weight Polish)
¥180,000
Engine
Transmission Dog Undercut
¥20,000
Engine
WPC Coating
(Gear, Drum, Shift Fork and Shaft)
Please Ask
Engine
JB-POWER Oil Cooler Kit 13 Row, 330mm, Downwards, Black
(Below Tank, Fitting, Hose, Adapter, Bracket)
¥80,000
Engine
JB-POWER Small Auto Cam Chain Tensioner
(Ratchet Type, for Reinforced Idler)
¥22,000
Engine
JB-POWER Milled Aluminum Kick Shaft Plug
(Silver Anodized)
¥5,000
Engine
JB-POWER Milled Aluminum Point Cover TYPE-B
(BITO R&D)
¥20,000
Engine
JB-POWER Milled Aluminum Oil Filter Cover
(Chromoly Bolt, O-ring Included)
¥23,000
Frame parts
JB-POWER Milled Aluminum Engine Mount Set
(Black Anodized)
¥28,000
Frame parts
JB-POWER Chromoly Engine Mount Bolt
(Nut Included, Rear Upper, φ10mmx250mm)
¥13,000
Frame parts
JB-POWER Chromoly Engine Mount Bolt
(Nut Included, Rear Under, φ10mmx165mm)
¥13,000
Suspension
JB-POWER KYB Special Front Fork φ38mm
(Black Bottom)
¥140,000
Frame parts
JB-POWER Hollow Chromoly Front Axle Shaft
(φ17mm)
¥19,000
Frame parts
JB-POWER Milled Aluminum Fork Bridge φ38mm Black Anodized
(Offset 45mm, Usable Key Lock)
¥155,000
Frame parts
JB-POWER Cowl Mount Bracket (Upper)
Black Anodized
¥16,000
Frame parts
JB-POWER Cowl Mount Bracket (Under)
Black Anodized
¥15,000
Frame parts
Genuine Headlight Bracket Boring
Please Ask
Frame parts
JB-POWER Handle Bar (Black)
¥8,000
Frame parts
JB-POWER Milled Aluminum Handle Bar End
(Black Anodized / x2)
¥3,000
Frame parts
JB-POWER KYB Rear Suspension
(with Reserve Tank)
¥75,000
Frame parts
JB-POWER Milled Aluminum Riding Step Kit
(Low Type, Black Anodized, 115mm Back / 25mm Up)
¥70,000
Frame Parts
JB-POWER Special Frame Reinforcement
(Lay Down and Black Powder Coating Included)
¥150,000
Frame parts
JB-POWER Aluminum Swing Arm
(Square Chain Adjuster, Black Powder Coat)
¥180,000
Frame parts
JB-POWER Milled Aluminum Racing Stand Hook
(Black Anodized)
¥10,000
Frame parts
JB-POWER Hollow Chromoly Pivot Shaft
(Nut included)
¥15,000
Frame parts
JB-POWER Hollow Chromoly Rear Axle Shaft
(Nut included)
¥22,000
Exterior
Beater Aluminum Tank
Please Ask
Exterior
Lightweight FRP Bikini Cowl
Please Ask
Exterior
Seat Cover Exchange and Foam Modification
(Dimple)
¥50,000
Exterior
JB-POWER Milled Aluminum Number Plate Holder
(Black Anodized, Japanese Numberplates Only)
¥16,000
Tires
DUNLOP SPORTMAX α-14
(110/80ZR18,150/70ZR18)
Please Ask
Drive Train
D.I.D Gold Chain 520
Please Ask

Engine Power

48%

Total Dynamic Weight Reduction Effect

75%

Cornering

88%

Brakes Performance

89%

Comfort

85%

Total

77%