Yamaha XT500 TT500 SR400 & SR500 Racing Valve Spring Set 21-013

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Manufacturer #:102-Y
Sku:21-013

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This complete competition racing valve spring set includes
everything you need for blistering speed, such as the inner
and outer springs retainers, tops, and keepers!
They are good for cams up to 550 lift.
 
They are a perfect upgrade replacement for OEM part numbers:
90501-444455-00, 90501-31454-00, 256-12117-02-00, 256-12116-01-00