Yamaha R6
121 hp, 600 cc, 401 lbs2003 - 2004
Harley Davidson Dyna Street Bob
65 hp, 1584 cc, 670 lbs2013
EngineYamaha R6Harley Davidson Dyna Street Bob
Displacement600 cc1584 cc
Max power121 hp (@13 000 RPM)65 hp (@5 500 RPM)
Max torque44 lb ft (@12 000 RPM)91 lb ft (@3 500 RPM)
Redline15 500 RPM5 800 RPM
Idling speed1 500 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-4SOHC V-twin
Compression12.40:19.20:1
Oil capacity3.22 quart2.65 quart
Oil type10W40, Motul 300V 10W40, Shell Rotella 10W40
Spark plug typeNGK CR9EK, NGK CR10EK
CoolingLiquidAir
Valves164
Bore65.5 mm95.0 mm
Stroke44.5 mm111.0 mm
Throttle bore38.0 mm
Weight to power3.32 lbs/hp10.31 lbs/hp
Power to weight753 hp/2500lbs242 hp/2500lbs
Battery type12 V 8 Ah, GT9B-4
GearboxYamaha R6Harley Davidson Dyna Street Bob
TypeSequentialSequential
ClutchWetWet
DriveChainBelt
Chain type
Gears count66
Primary ratio1.9551.353
Final drive3.02.065
1. gear2.846 (68 mph)3.337 (48 mph)
2. gear1.947 (100 mph)2.313 (69 mph)
3. gear1.556 (125 mph)1.718 (93 mph)
4. gear1.333 (146 mph)1.391 (114 mph)
5. gear1.19 (164 mph)1.185 (135 mph)
6. gear1.083 (180 mph)1.0 (160 mph)
ChasisYamaha R6Harley Davidson Dyna Street Bob
Frame typeDiamondTubular-steel double-cradle
Front susp.Telescopic fork USD, 4.72 in travel41mm showa fork
Rear susp.Swingarm link, spring/gas-oil damperDual Showa shocks