Replacement parts for the early version Kitaco STD CRF50 and Monkey Gorilla big valve head that utilized an exhaust valve seal only. Also cross over to the BBR 88cc and 106cc Super Pro heads. All items sold individually unless otherwise noted.
- dual valve springs are sold in set of 4 (two inner, two outer)
- aluminum valve spring retainers constructed of 7075AL and sold in set of 2