• DiASil (die-cast aluminum cylinder) which has better heat conductance to dissipate excessive heat easily.
• Lighter forged piston technology came from Yamaha R6
• Roller bearing rocker arms with less friction than typical rocker arms.
• 4-valve water-cooled engine
• Fuel injection (2008 Yamaha Spark 135i in Thailand only)
• Carburetor with throttle position sensor and accelerator pump (other countries) - The T135 uses Mikuni VM22 carburetor equipped with throttle position sensor for more precise ignition timing, increasing the engine's efficiency, and also an accelerator pump for better acceleration and instant response during take-off.
• Catalytic converter
• Dual-piston front disc brake (Yamaha 135LC Extreme Spirit in Malaysia)
• Cast sport rims with tubeless tires (standard for Malaysian models only)
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