This Contrail motor hardware set is certified for K888, K777, K678, K404 and K300 loads. The anodized aluminum casing set fits 75mm motor mounts; no external vent is necessary. You must select a Slow nozzle and a Short combustion chamber for the K300 and K404 loads, and a Medium nozzle and Short combustion chamber for K678, K777 and K888 loads.

This Hardware Set includes:

• One nozzle (select Slow, Medium, or Fast when you order)
• One combustion chamber (specify size when you order)
• One tank assembly (with injector)
• Bolts, vent connector, thrust ring and hardware

You can separately purchase different Nozzles and Combustion Chamber sizes to allow the use of different loads as more Contrail motor combinations are certified. For charts and details, see our Contrail Info Page.