・The reinforced crankcase is specially designed to increase the rigidity of the crankcase and to reduce the load on the crankcase caused by the larger displacement.
・The die-cast aluminum crankcase has the strengthened ribs in every detail.In addition, by adopting the oil jet mechanism with excellent cooling effect, oil is always injected directly to the connecting rod, cylinder, piston, etc., and the inside of the engine can be cooled.
・The crankshaft direct drive oil pump is used.The discharge volume is about twice as large as that of a standard reinforced oil pump.
・The breather pipe has a 6mm inner diameter compared to the stock 4mm inner diameter in order to reduce the internal pressure of the crankcase of large displacement engines.
・The transmission bearing is equipped with a special bearing hold plate to receive the large torque from the large displacement.
■Cross Transmission Kit for Reinforced Crankcase
Reinforced crankcase only
・TAF 5 Speed Cross Transmission Kit
・S Touring 5 speed
・Gear ratio
First gear: 2.357 / 2-speed: 1.611 / 3-speed: 1.190 / 4-speed: 0.958 / 5-speed: 0.807
Super Street 5 Speed
・Gear ratio
First gear: 2.357 / 2-speed: 1.764 / 3-speed: 1.400 / 4 speed: 1.136 / 5-speed: 1.000
S Touring 5 speed (for secondary)
・For wet clutch: 02-04-0083 / for dry clutch:
02-04-0084Super Street 5 Speed (for Secondary)
・For wet clutch: 02-04-0247/for dry clutch:
02-04-0246Reinforced crankcase only
・6 Speed Cross Transmission Kit
・SP TAKEGAWA does not recommend to install 138cc / 148cc and 6 speed cross transmission kit at the same time.
・Six-speed cross
・Gear ratio
First gear: 2.615 / 2-speed: 2.000 / 3-speed: 1.578 / 4-speed: 1.333 / 5-speed: 1.181 / 6-speed: 1.043
・For wet clutch: 02-04-0095 / for dry clutch:
02-04-0096■If you have a cross transmission made by SP Takegawa
If you have SP TAKEGAWA cross transmission, you can install it to the reinforced crank case by purchasing "Cross Transmission Conversion Kit".
・Cross Transmission Conversion Kit for SS5 Speed Cross Transmission by SP Takegawa
For wet clutches:01-00-0005 / for dry clutch:
01-00-0004・Cross Transmission Conversion Kit for TAF 5 Speed Cross Transmission by SP Takegawa
For wet clutches:02-04-0093 / for dry type clutch:
02-04-0094・Cross Transmission Conversion Kit for SP Takegawa 6-speed Cross Transmission
For wet clutches:01-00-0007 / for dry clutch:
01-00-0006