Guide Stopper (Front cam chain guide bar) Fits: All TX/XS 650's 1970-84 - OEM Ref.# 256-12231-01 When black plastic bits start showing up in your oil its usually from the guide bar breaking up due to heat & old age. Replace it as the cam chain will next start to saw its way thru the aluminum support.
OEM Reference #
- 256-12231-01