PROPULSION

OSM29203400 OS PISTON RING 108FSR Note: Graves RC Coupons are not applicable with this product     This is the Replacement Piston Ring for the OS Max 108FSR Engine.This piston ring goes around the piston in the groove. FEATURES All...

OSM29320000 OS THRUST WASHER BGX-1 Note: Graves RC Coupons are not applicable with this product     This is the replacement thrust washer for the BGX-1 OS engine INCLUDES 1- Washer (metal)   SPECIFICATIONS Outside...

OSM29325400 OS ENGINES Muffler Screws #5010 (2) Note: Graves RC Coupons are not applicable with this product     These screws are for the #5010 muffler which fits the BGX-1.This assembly screw holds the muffler to the engine...

OSM29326400 OS BGX-1 ADAPTER SCREWS #5010 Note: Graves RC Coupons are not applicable with this product     These screws are for ataching the muffler adapteron the O.S. BGX-1. ncludes: 2- M5x15mm socket head screws.** Use 4mm allen...

OSM29503400 OS 91FX PISTON RING Note: Graves RC Coupons are not applicable with this product     This is the Replacement Piston Ring for the OS Max .91 FX Engine. INCLUDES One Piston Ring   COMMENTS This is the ring of a...

OSM29508000 OS ENGINES Drive Washer 91FX Note: Graves RC Coupons are not applicable with this product  

OSM29514000 OS GASKET SET 91FX,SX Note: Graves RC Coupons are not applicable with this product     This is a Replacement Gasket Set for the OS Max .91FX Engine. INCLUDES One Head Gasket - this very thin metal gasket seals the gap...

OSM34330 OS Engines FSa-56II Airplane Engine with F-4040 Silencer Note: Graves RC Coupons are not applicable with this product     Features: The popular FS56-a now features upgrades that make it even better than before! Blow-by oil exits...

OSM34721 O.S. ENGINES FSa-72II Airplane Engine w/F-5030 Silencer Note: Graves RC Coupons are not applicable with this product     The Tradition Continues... O.S. leads the way in advanced 4-stroke engine technology, and you’ll see...

OSM35430 O.S. FS155-a Alpha Series 1.55 4-Stroke Pumped Engine Note: Graves RC Coupons are not applicable with this product     This is the FS155-a P Four Cycle Engine with Pump System from O.S. Engines. FEATURES Ideal for 120 size...

OSM35540 O.S. FS-120 III Surpass Ringed 1.20 4-Stroke w/Pump Note: Graves RC Coupons are not applicable with this product     This is one of the O.S. Surpass series of 4-stroke model engines.The Surpass series is the 2nd series of 4-stroke...

OSM36108 O.S. FT-160 Gemini Twin-Cylinder Ringed 4-Stroke Engine Note: Graves RC Coupons are not applicable with this product     This is a FT-160 Twin-Cylinder 4-Stroke Engine from O.S. Max.This Engine is a Flat (Opposed) Twin-Cylinder...