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The popular race silencer produces an aggressive deep
NY using a Powder Freaks billet head on their 860 bb beating out Bikeman performance 880bb by 6 tenths of a second
Anodized black
If the track climbs up the tooth of the driver because it is run too loose
Xp/xm Billet thermostat housing exhaust The popular race silencer producesThis is a must have for all xp owners riding in the steep and deep. Under prolonged continuous wot riding you will experience power fade. This billet housing replaces the stock thermostat housing. The stock thermostat doesn't open completely until the engine reaches 150 deg. At 145deg. the computer will start to retard the timing (built in safety to keep the motor from burning up) and will rob you of up to 10hp. The thermostat in our housing will be
