21 PRO Competition Off-Road Engine -10 ports

The SH Engines PT21AO-XGB.21 Competition Off-Road Buggy Nitro Engine is a great option for a.21 sized nitro engine that delivers great power and run time, without breaking the bank. Package includes one nitro engine, one T3 glow plug, one collet, one head shim, four venturis and one manual.
Specifications: Cubic Capacity: 3.49CC Bore: 15.88mm Stroke: 17.60mm R.P.M.: 36000 rpm Weight: 356g