“Crankshaft Threads1u002F4x28Crankshaft TypeSGCylindersSingleDisplacement.21Muffler TypeRearExhaustPlug TypeStandardPower TypeGlowStarter TypePull-Start” Reviews There are no reviews yet. Be the first to review “.21 RTR Engine with Pull Start” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.