Z1

Timeless “Z” – The ultimate Classic

 
 

Over 40 years after its appearance, this marvelous motorcycle continues to fascinate people worldwide.
The Timeless “Z” is the foundation of Kawasaki’s motorcycles - Dawn of the golden age of air-cooled four-cylinder engines.

 
 

It's safe to say that BITO R&D’s design philosophy originated in this bike.
Our deep love for the “Z” and years of dedication eventually led to unrivaled knowledge.

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JB Power - Special Racing Parts - BITO R&D

Development & Concept

Aiming for the world’s best quality and performance motorcycle, Kawasaki Heavy Industries put all stakes on one card and finally released the long-awaited ZI, in 1972. With the release of the W1 in 1966, and the 500SS MACH Ⅲ in 1969, Kawasaki strived to establish their “BIG BIKES”, yet failing to overcome the “Wall to the World” resulted in only moderate sales numbers.

Therefore, Kawasaki initiated the development of an even more powerful, 750cc DOHC straight four-cylinder, flagship model, yet in 1968 Honda launched the CB750Four (K). With Honda being one step ahead, the surpassed Kawasaki Team changed its plan to build a motorcycle exceeding Honda’s CB750 by far, the Z900 Super Four (ZI).

Ultimately, managers and engineers making the right decisions and consequently aiming for a world-beating product led to the birth of the hugely successful ZI, which became the cornerstone of today’s Kawasaki motorcycles. Even today, it can be said that no bike exceeds the legendary ZI. Half a century after its launch the most amazing motorcycle in the world still shines.

Features

JB-POWER
MAGTAN JB1
3.00-18, Gold
JB-POWER
MAGTAN JB1
4.00-18, Gold
Sprocket 530-38
JB-POWER
Hand-Bend Titanium Exhaust System (4 into 1, Titanium Silencer)
JB-POWER KEIHIN
FCR Carburetor Φ35 Alumite
JB-POWER
Milled Aluminum Air Funnel (35mm, Stainless Steel Net)
JB-POWER
Aluminum Oil Catch Tank (Square 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 (Φ38,Offset 45mm, Silver Anodized)
Meter Bracket (For Bush Mount)
JB-POWER
Handle Bar (Chrome)
Mirror Holder (Silver)
AP-RACING
Brake Master Cylinder CP3125-2 (Switch included)
JB-POWER
Milled Aluminum Head Light Bracket (Φ38mm, Hard Anodized)
JB-POWER KYB
Special Front Fork Φ38mm (Total Length 815mm, Silver Bottom)
JB-POWER
Hollow Chromoly Front Axle Shaft (Φ17mm)
DUNLOP
SPORTMAX α-14
110/80ZR18
JB-POWER
Oil Cooler Kit 16 Row, Silver (Below Tank, Fitting, Hose, Adapter, Bracket)
JB-POWER
Special Tuned Engine
Displacement 1,197cc
Compression Ratio 11.0:1
Forged Aluminum Piston Kit
Cylinder Liner
Liner exchange, Boring, Upper Case Honing
Big Valve & Heavy Duty Valve Spring Set
Special Head Porting
Crank Shaft Special Overhaul (B/G Exchange, Center Alignment, Pin Welding, Conrod Weight Matching, Counter Weight Polish)
Hi Tension Bolt
Small Auto Cam Chain Tensioner (Ratchet Type, for Reinforced Idler)
Milled Aluminum Kick Shaft Plug
FCC
Heavy Duty Clutch Set
YOSHIMURA
Camshaft ST-2
JB-POWER
Transmission Dock Undercut WPC Coating (Gear, Drum, Shift Fork and Shaft)
JB-POWER
Rear Floating Kit (Cast Iron Disc Φ250mm, CP2696 Caliper…)
JB-POWER KYB
Rear Suspension (With Tank, Total Length 355mm)
JB-POWER
Milled Aluminum Engine Mount Set (Silver)
JB-POWER
Milled Aluminum Riding Step Kit [Rear Set] (Master Cylinder included)
JB-POWER
Hollow Chromoly Pivot Shaft
JB-POWER
Special Frame Reinforcement (Lay Down and Black Powder Coating included)
JB-POWER
Aluminum Swing Arm (Eccentric Chain Adjuster Type, Chain Guard included)
JB-POWER
Hollow Chromoly Rear Axle Shaft
Chromoly Rear Axle Nut
JB-POWER
Milled Aluminum Number Plate Holder (Silver Anodized, Japanese Numberplates only)
DUNLOP
SPORTMAX α-14
150/70ZR18
JB-POWER
Milled Aluminum Racing Stand Hook
JB-POWER
Seat Cover Exchange and Foam Modification
D.I.D
Gold Chain 530
JB-POWER
Chromoly Engine Mount Bolt (Nut Included, Rear Upper, φ10x250mm)
JB-POWER
Chromoly Engine Mount Bolt (Nut Included, Rear Lower, φ10x165mm)
JB-POWER
Hand-Bend Titanium Exhaust System (4 into 1, Titanium Silencer)
JB-POWER
MAGTAN JB1 3.00-18 Gold
Cast Iron Brake Disc
Radial Mount Caliper
Caliper Bracket
Hollow Chromoly Front Axle Shaft
GOODRIDGE
Stainless Mesh Hose
EARL’S
Stainless Fitting
DUNLOP
SPORTMAX α-14 (110/80ZR18)
JB-POWER
MAGTAN JB1 4.00-18 Gold, 530-38
Rear Floating Kit (Φ250, CP2696…)
Aluminum Swing Arm
Racing Stand Hook
Hollow Chromoly Rear Axle Shaft
Chromoly Rear Axle Nut
DUNLOP
SPORTMAX α-14 (150/70ZR18)
D.I.D
Gold Chain 530
JB-POWER
Special Tuned Engine
Displacement 1,197cc
Compression Ratio 11.0:1
Forged Aluminum Piston Φ76mm
Cylinder Liner
Liner Exchange, Boring, Upper Case Honing
Big Valve & Valve Spring Kit
Special Head Porting
Crank Shaft Special Overhaul
Transmission Dock Undercut
High Tension Bolt (M8)
Small Auto Cam Chain Tensioner
Kick Shaft Plag
Aluminum Air Funnel 35mm
Oil Cooler Kit 16 Row (Silver)
Engine Mount Set (Silver)
Chromoly Engine Mount Bolt
YOSHIMURA
Cam Shaft ST-2
FCC
Heavy Duty Clutch Set
JB-POWER KEIHIN
FCR Carburetor Φ35 Alumite
JB-POWER
Oil Catch Tank (Square Box Type)
Riding Step Kit (Low Type)
Hollow Chromoly Pivot Shaft
Special Frame Reinforcement
AP-RACING
Brake Master Cylinder CP3125-2
JB-POWER
Mirror Holder (Silver)
Fork Bridge Set (Silver, Offeset 45mm)
Meter Bracket (For Bush Mount)
Head Light Bracket (Hard Anodized)
Handle Bar (Chrome)
JB-POWER KYB
Front Fork Φ38mm (Silver Bottom)
JB-POWER
Seat Cover Exchange, Foam Modification
JB-POWER KYB
Rear Suspension (With Tank)
JB-POWER
Number Plate Holder (Silver)

SPECS

Exhaust
JB-POWER Hand-Bend Titanium Exhaust System
(4 into 1, Titanium Silencer)
¥250,000
Wheels
JB-POWER MAGTAN JB1 F3.00-18, R4.00-18 Gold
Sprocket 530-38
¥350,000
Carburetor
JB-POWER KEIHIN FCR Carburetor Φ35 (Alumite)
¥204,000
Carburetor
JB-POWER Milled Aluminum Air Funnel FCR 35mm
(Stainless Steel Net / x4)
¥7,500
Carburetor
JB-POWER Aluminum Oil Catch Tank
(Square Box Type)
¥18,000
Brakes
JB-POWER Cast Iron Front Brake Disc
(Φ320mm, 6POT / x2)
¥75,000
Brakes
JB-POWER Radial Mount Brake Caliper 6POT
(Brake Pads Included / x2)
¥98,000
Brakes
JB-POWER Milled Aluminum Radial Brake Caliper Bracket
(for JB Radial Mount Caliper / x2)
¥25,000
Brakes
AP-RACING Brake Master Cylinder CP3125-2
(Switch included)
¥69,000
Brakes
JB-POWER Milled Aluminum Mirror Holder
¥5,000
Brakes
GOODRIDGE Stainless Mesh Hose
EARL'S Stainless Fittings (x2)
¥11,000
Brakes
JB-POWER Rear Floatin Kit
(Cast Iron Disc Φ250mm, CP2696 Caliper...)
¥184,600
Engine
JB-POWER Special Tuned Engine
(Displacement 1197cc, Compression Ratio 11.0:1)
Please Ask
Engine
JB-POWER Forged Aluminum Piston Kit Φ76mm
¥125,000
Engine
JB-POWER Cylinder Liner (x4)
¥9,500
Engine
Liner exchange, Boring, Upper Case Honing
Please Ask
Engine
JB-POWER Big Valve & Heavy Duty Valve Spring Kit
¥130,000
Engine
JB-POWER Special Porting
Please Ask
Engine
YOSHIMURA Camshaft ST-2
Please Ask
Engine
FCC Heavy Duty Clutch Set
¥30,000
Engine
JB-POWER Crank Shaft Special Overhaul
(B/G Exchange, Center Alignment, Pin Welding,
Conrod Weight Matching, Counter Weight Polish)
¥180,000
Engine
JB-POWER High Tension Bolt (M8)
¥1,000
Engine
Transmission Dock Undercut
¥20,000
Engine
WPC Coating
(Gear, Drum, Shift Fork and Shaft)
Please Ask
Engine
JB-POWER Oil Cooler Kit 16 Row, Silver
(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
¥5,000
Frame parts
JB-POWER Milled Aluminum Engine Mount Set (Silver)
¥28,000
Frame parts
JB-POWER Chromoly Engine Mount Bolt
(Nut Included, Rear Upper, Φ10x250mm)
¥11,000
Frame parts
JB-POWER Chromoly Engine Mount Bolt
(Nut Included, Rear Lower, Φ10x165mm)
¥11,000
Suspension
JB-POWER KYB Special Front Fork Φ38mm
(Total Length 815mm, Silver Bottom)
¥130,000
Frame parts
JB-POWER Hollow Chromoly Front Axle Shaft (Φ17mm)
¥19,000
Frame parts
JB-POWER Milled Aluminum Fork Bridge
(45mm Offset, Silver Anodized)
¥150,000
Frame parts
JB-POWER Meter Bracket (For Bush Mount)
¥20,000
Frame parts
JB-POWER Milled Aluminum Head Light Bracket
(Φ38mm, Hard Anodized)
¥30,000
Frame parts
JB-POWER Handle Bar (Chrome)
¥6,000
Frame parts
JB-POWER KYB Rear Suspension
(With Tank, Total Length 355mm)
¥75,000
Frame parts
JB-POWER Milled Aluminum Riding Step Kit [Rear Set]
Low Type (115mm Rear / 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
(Eccentric Chain Adjuster Type, Chain Guard Included)
¥150,000
Frame parts
JB-POWER Milled Aluminum Racing Stand Hook
¥10,000
Frame parts
JB-POWER Hollow Chromoly Pivot Shaft
¥15,000
Frame parts
JB-POWER Hollow Chromoly Rear Axle Shaft
¥15,000
Frame parts
JB-POWER Chromoly Rear Axle Nut
¥3,000
Exterior
JB-POWER Seat Cover Exchange and Foam Modification
¥50,000
Exterior
JB-POWER Milled Aluminum Number Plate Holder
(Silver Anodized, Japanese Numberplates Only)
¥16,000
Tires
DUNLOP SPORTMAX α-14
(110/80ZR18,150/70ZR18)
Please Ask
Drive Train
D.I.D Gold Chain 530
Please Ask

Engine Power

48%

Total Dynamic Weight Reduction Effect

75%

Cornering

88%

Brakes Performance

89%

Comfort

85%

Total

77%