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This is the pipe we use to make our F8 big bores make 170-174 HP and over 180 HP with our F9 big bores
This manifold is not just peak power
Big mid range and torque gain
No need for twin pipes any more
Constructed from thin
Exhaust Valve Spacers Category_Default Category/SLED/Clutching/Yamaha Sled Clutching This is the pipe we1000 Motors Since the exhaust valves dont open until 6800 rpm, there is a loss of torque from 6300 to 6750 rpm in the mid range. By installing our exhaust valve spacers your machine will see gains of 6 8 hp in the mid range with the stock exhaust, and 8 10 hp if you have an aftermarket exhaust system. It adds a lot of mid range power and broadens the powerband at an extremely low price. Machined out of aluminum, sold as a pair and comes with a easy
