Motorcycle Questions? Ask a Mechanic.
can you tell me what make and model this is please? as I've not heard of Frewheel?
I'd start by investigating the official 'screaming eagle ' range of parts as they sell , intakes, exhausts and the more serious 'stage' upgrades where the capacity is increased and high lift cams are also fitted
if you're looking for something else then let me know
do you still need help?
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