GPZ900R

The Next Z
Water Cooled – 4 Cylinder – 16 Valves

 
 

Designed as “The Next Z” upon release, the GPZ900R was overly geared up to battle its contenders.
However, after getting rid of the unnecessary baggage it transformed into a real NINJA.

 
 

Here is a bike ready to give you the true joy of operating a motorcycle.

1
1
JB Power - Special Racing Parts - BITO R&D

Development & Concept

The GPZ900R NINJA was released in 1984 aiming for the pinnacle of the super-sports class, carrying on the Kawasaki proud heritage as “The Next Z”.

Equipped with Kawasaki’s outstanding, first-generation liquid-cooled, side-cam chain four-cylinder engine, the machine has left a technological footprint that continues till the present.

The GPZ900R’s continued admiration by many fans and appearances in Hollywood movies made it famous all over the world – A motorcycle that truly changed the course of Kawasaki’s history.

The avant-garde combination of 16-inch front and 18-inch rear wheels is said to give the NINJA its special character. However, in changing to 18-inch forged magnesium wheels, BITO R&D managed to achieve a neutral, easy to control handling.

A bore-up piston kit and special porting gave a significant boost to the already impressive engine performance and retiring the separate handle in favor of a handlebar, a new rear set as well as a revised seat shape, all of which create an optimized riding position.

The engine revs obediently to the rider’s command and the acceleration potential seems to be limitless. However, the neutral handling created by 18-inch wheels, and the relaxed riding position provide not only the joy of cornering but also comfort on extended trips and the exquisite pleasure of riding in a leisurely dialog with your bike.

With the JB-POWER NINJA, a motorcycle that teaches the true pleasure of riding was born!

Features

Kawasaki GPZ900R
JB-POWER
MAGTAN JB3
3.50-17, Semi-Gloss Black
JB-POWER
MAGTAN JB4
5.00-17, Semi-Gloss Black
Sprocket 530-45
JB-POWER
Hand-Bend Titanium Exhaust System (4 into 1, Type 2)
JB-POWER KEIHIN
FCR Carburetor Φ37 Alumite
JB-POWER
Milled Aluminum Air Funnel
(50mm, Stainless Steel Net)
JB-POWER
Aluminum Oil Catch Tank (Cylinder Type, Polish)
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 (Φ41, 40mm Offset, Silver Anodized)
JB-POWER
Throttle Holder & Wire
Handle Bar (Black)
AP-RACING
Brake Master Cylinder CP3125-2 (Switch Included)
JB-POWER KYB
Special Front Fork Φ41mm (Titanium Nitride Coating, Silver Bottom)
JB-POWER
Hollow Chromoly Front Axle Shaft (Φ15mm)
JB-POWER
Oil Cooler Kit 13 Row 260mm, Silver (Fitting, Hose, Adapter, Bracket Included)
JB-POWER
Special Tuned Engine
Displacement 1,024cc
Compression Ratio 12.5:1
Cylinder Liner
Cylinder Liner Exchange and Boring
Special Head Porting
GPZ1000RX Crank Shaft
JB-POWER COSWORTH
Forged Aluminum Piston Kit
FCC
Heavy Duty Clutch Set
JB-POWER
Rear Floating Kit (Cast Iron Disc Φ250mm, CP2696 Caliper…)
OHLINS
Rear Suspension
JB-POWER
Milled Aluminum Riding Step Kit [Rear Set] (Silencer Bracket Included, 20mm Rear, 17.5mm Up)
JB-POWER
Hollow Chromoly Pivot Shaft
Chromoly Pivot Nut (Out Side)
Chromoly Pivot Nut (In Side)
JB-POWER
Hollow Chromoly Rear Axle Shaft
Chromoly Rear Axle Nut
JB-POWER
Milled Aluminum Racing Stand Hook
JB-POWER
Milled Aluminum Number Plate Holder (Silver Anodized, Japanese Numberplates only)
JB-POWER
Seat Cover Exchange
D.I.D
Gold Chain 530
DUNLOP
SPORTMAX α-14
120/70ZR17
DUNLOP
SPORTMAX α-14
170/60ZR17
AP-RACING
Clutch Master Cylinder CP3125-3
GOODRIDGE Stainless Mesh Hose
EARL’S
Stainless Fittings
Kawasaki GPZ900R
JB-POWER
Hand-Bend Titanium Exhaust System (4 into 1, Titanium Silencer, Type 2)
JB-POWER
MAGTAN JB3 3.50-17 Semi-Gloss Black
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 (120/70ZR17)
JB-POWER
MAGTAN JB3 5.00-17 Semi-Gloss Black, 530-45
Rear Floating Kit (Φ250, CP2696…)
Racing Stand Hook
Hollow Chromoly Rear Axle Shaft
Chromoly Axle Nut
DUNLOP
SPORTMAX α-14 (170/60ZR17)
D.I.D
Gold Chain 530
JB-POWER
Special Tuned Engine
Displacement 1,024cc
Compression Ratio 12.5:1
Cylinder Liner
Liner Exchange, Boring
Special Head Porting
GPZ1000RX Crank shaft Oil Cooler Kit 13 Row 260mm (Silver)
Aluminum Air Funnel 50mm
JB-POWER COSWORTH
Forged Aluminum Piston Φ77mm
FCC
Heavy Duty Clutch Set
JB-POWER KEIHIN
FCR Carburetor Φ37 (Alumite)
JB-POWER
Oil Catch Tank (Round Type, Polish)
Riding Step Kit
Tandem Step Kit
Hollow Chromoly Pivot Shaft
Chromoly Pivot Nut (In Side)
Chromoly Pivot Nut (Out Side)
OHLINS
Rear Suspension
AP-RACING
Brake Master Cylinder CP3125-2
Clutch Master Cylinder CP3125-3
JB-POWER
Throttle Holder & Wire Set
Fork Bridge Set (Silver, Offeset 40mm)
Head Light Bracket (Silver)
Handle Bar (Chrome)
JB-POWER KYB
Front Fork Φ41mm (Silver Bottom)
JB-POWER
Seat Cover Exchange
JB-POWER
Number Plate Holder (Silver)

SPECS

Exhaust
JB-POWER Hand-Bend Titanium Exhaust System
(4 into 1, Titanium Silencer, TYPE 2)
¥250,000
Wheels
JB-POWER MAGTAN JB3 F3.50-17, R5.00-17 Semi-Gloss Black
Sprocket 530-45
¥350,000
Carburetor
JB-POWER KEIHIN FCR Carburetor Φ37 (Alumite)
¥199,000
Carburetor
JB-POWER Milled Aluminum Air Funnel FCR 50mm
(Stainless Steel Net / x4)
¥8,000
Carburetor
JB-POWER Milled Aluminum Throttle Holder & Wire Set
¥26,000
Carburetor
JB-POWER Aluminum Oil Catch Tank
(Round Type, Polish)
¥15,000
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
GOODRIDGE Stainless Mesh Hose +
EARL'S Stainless Fittings [Brakes] (x2)
¥11,000
Clutch
AP-RACING Clutch Master Cylinder CP3125-3
Out of Production
Clutch
GOODRIDGE Stainless Mesh Hose +
EARL'S Stainless Fittings
¥11,000
Brakes
JB-POWER Rear Brake Kit
(Cast Iron Disc Φ250mm, CP2696 Caliper...)
¥184,600
Engine
JB-POWER Special Tuned Engine
(Displacement 1,024cc, Compression Ratio 12.5:1)
Please Ask
Engine
JB-POWER COSWORTH Forged Aluminum Piston Kit Φ77mm
¥130,000
Engine
JB-POWER Cylinder Liner (x4)
¥8,000
Engine
JB-POWER Liner Exchange, Boring
Please Ask
Engine
JB-POWER Special Head Porting
Please Ask
Engine
Crankshaft (GPZ1000RX)
Please Ask
Engine
FCC Heavy Duty Clutch Set
¥30,000
Engine
JB-POWER Oil Cooler Kit 13 Row 260mm
(Fitting, Hose, Adapter, Bracket)
¥70,000
Suspension
JB-POWER KYB Special Front Fork Φ41mm
(Titanium Nitride Coating, Silver Bottom)
¥180,000
Frame parts
JB-POWER Hollow Chromoly Front Axle Shaft (Φ15mm)
¥19,000
Frame parts
JB-POWER Milled Aluminum Fork Bridge
(Offset 40mm, Silver Anodized)
¥150,000
Frame parts
JB-POWER Handle Bar (Black)
¥8,000
Suspension
OHLINS Rear Suspension
Please Ask
Frame Parts
JB-POWER Milled Aluminum Riding Step Kit [Rear Set]
(20mm Rear, 17.5mm Up)
¥130,000
Frame parts
JB-POWER Milled Aluminum Tandem Step Kit [Pillion Footrest]
¥50,000
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 Chromoly Pivot Nut (In Side / x2)
¥3,000
Frame parts
JB-POWER Chromoly Pivot Nut (Out Side / x2)
¥3,000
Frame parts
JB-POWER Hollow Chromoly Rear Axle Shaft
¥15,000
Frame parts
JB-POWER Hollow Chromoly Rear Axle Nut
¥3,000
Exterior
JB-POWER Seat Cover Exchange
¥40,000
Exterior
JB-POWER Milled Aluminum Number Plate Holder
(Silver Anodized, Japanese Numberplates Only)
¥16,000
Tires
DUNLOP SPORTMAX α-14
(120/70ZR17,170/60ZR17)
Please Ask
Drive Train
D.I.D Gold Chain 530
Please Ask

Engine Power

40%

Total Dynamic Weight Reduction Effect

80%

Cornering

75%

Brakes Performance

78%

Comfort

85%

Total

71.6%