Used Solas Concord for Seadoo 155mm 2-stroke pump. 10/16 pitch. Excellent shape. Good for 951 Seadoo XP Ltd, GTX/GSX Ltd, Limited/modified set up where more RPM's are needed. Missing nose boot/nose cone. NO returns on any used parts. Please make sure fitment for your application. Please email with questions or call the shop before ordering. Thank you