Centering and Thrust Rings
BT-20 (18mm) Thrust Ring. 24 Pack
24 Engine Blocks for Standard Engines. Fits BT-20 Tube. Engine Block or Thrust Ring is used to position the engine in the engine tube.
BT50 (24mm) Thrust Ring. 24 Pack
24 Engine Blocks for 24 mm Engine Mount. Fits BT-50 Tube. Engine Block or Thrust Ring is used to position the engine in the engine tube.
BT50/BT20 Centering Rings. 24 pack
This ring will center a BT-20 tube (standard engine mount tube) within a BT-50 tube.