OS ENGINES

OSM45960400 OS VALVE COLLET FS-70 FS-91 SURPASS Note: Graves RC Coupons are not applicable with this product     This is the replacement Valve Collets for OS engines:FS70 SURPASSFS91...

OSM45960110 OS EXHAUST VALVE FS-91 SURPASS Note: Graves RC Coupons are not applicable with this product     Set includes one Exhaust Valve for the FS-91 Surpass

OSM45910100 OS LOCKNUT SET FS-91 SURPASS Note: Graves RC Coupons are not applicable with this product     This is the Propeller Locking Nut Set for the O.S. MaxFS-70 Surpass FS-91...

OSM45903400 O.S. Piston Ring FS-91-P Note: Graves RC Coupons are not applicable with this product     This is the stock replacement Piston Ring for the FS91-S, and 91S II.This is...

OSM45808000 OS ENGINES DRIVE WASHER FS48, OS52SUR Note: Graves RC Coupons are not applicable with this product     This washer goes directly behind the propeller and has grooves that...

OSM45761200 O.S. Tappet Screw FS-20/48 Note: Graves RC Coupons are not applicable with this product     This is the replacement tappet screw for the following OS engines:FS26...

OSM45630000 OS CRANKSHAFT Rear Bearing FS61 Note: Graves RC Coupons are not applicable with this product     This is the Rear Bearing for the OS Max FS-61 Engine. INCLUDES One...

OSM45605000 OS CONNECTING ROD FS61,61M,70S,91 Note: Graves RC Coupons are not applicable with this product     This is the replacement connecting rod for the O.S. FS61, FS61-M, FS70...

OSM45581970 OS NEEDLE #7M/#7LFS Note: Graves RC Coupons are not applicable with this product     The needle valve is used to adjust the fuel/air mixture going into the carb.This is...

OSM45581820 OS CARB Rotor Guide Screw F90-300 Note: Graves RC Coupons are not applicable with this product     This is the replacement rotor guide screw for the following O.S...

OSM45566300 OS O Ring Large FF FT 120-320 Note: Graves RC Coupons are not applicable with this product     This is a pair of Large pushrod O-rings for the O.S. FF-320 Pegasus,...

OSM45566000 OS Pushrod FT-120-240 Note: Graves RC Coupons are not applicable with this product     This is the pushrod for the listed engine. The pushrod movesup an down to close the...