This is a pack of two replacement ProTek R/C Large Mid Needle O-Rings for RM.1, RM, 321B, S03 and R03 engines. The Mid Needle requires the use of one large and one small o-ring (PTK-2534) for operation.
This product was added to our catalog on November 6, 2014
the O.S. Max 95 AX ABL Aircraft Engine with Muffler. Features: Same mounting dimensions as the O.S. Max .75FX Power Box muffler design provides more volume for increased power in a very ...