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big valve head 25/24/20/21

big valve head 25/24/20/21
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big valve head 25/24/20/21
Reference : MT100015
Big valve Head for YZF R125 old model / Xmax125, X city, WRX/R 125
intake and exaust duct habe been enlarge for a best efficience, according to the valves diameter.

admission valve : 25/24mm ( instead of 19mm)
exaust valve : 20/21mm ( instead of 16mm)

Seat in cooper.
Allows a gaseous current improving the entrance of fresh gases and exit of burned gases.

Best use with a 180cm3 cylinder, but can be use with a 150 / 200cm3.

Deliver naked, with only valves.
Products available : 0
competition use
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