Yamaha R1
170 hp, 998 cc, 428 lbs2004
Kawasaki Z1000
125 hp, 953 cc, 487 lbs2007 - 2009
EngineYamaha R1Kawasaki Z1000
Displacement998 cc953 cc
Max power170 hp (@12 500 RPM)125 hp (@10 000 RPM)
Max torque78 lb ft (@10 500 RPM)73 lb ft (@8 200 RPM)
Redline13 500 RPM11 000 RPM
Idling speed1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-4DOHC Inline-4
Compression12.40:111.20:1
Oil capacity3.60 quart3.31 quart
Oil type15W50, Motul 300V 15W50, Liqui Moly 15W5010W40, Kawasaki 10W40, Shell Rotella 10W40
Spark plug typeNGK CR9EKNGK CR9EIA-9
CoolingLiquidLiquid
Valves1616
Bore77.0 mm77.2 mm
Stroke53.6 mm50.9 mm
Weight to power2.52 lbs/hp3.90 lbs/hp
Power to weight993 hp/2500lbs641 hp/2500lbs
GearboxYamaha R1Kawasaki Z1000
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain type
Gears count66
Primary ratio1.5121.714
Final drive2.6472.666
1. gear2.533 (97 mph)2.571 (68 mph)
2. gear2.063 (119 mph)1.882 (93 mph)
3. gear1.762 (139 mph)1.555 (112 mph)
4. gear1.522 (161 mph)1.333 (132 mph)
5. gear1.364 (180 mph)1.2 (146 mph)
6. gear1.269 (194 mph)1.095 (160 mph)
ChasisYamaha R1Kawasaki Z1000
Frame typeDiamondSteel, Backbone frame
Front susp.Telescopic fork - Coil spring/oil damper (120 mm travel)41 mm inverted cartridge fork
Rear susp.Swingarm (link suspension) - Coil spring/gas-oil damperBottom-Link Uni-Trak with gas-charged shock