This is a complete piston and gasket top end set for the yamaha 485 cc twin as used in several hovercraft.
Fits: Std 72mm bore.
Includes 2 pistons w/rings,pin. circlips
2 pin bearings.
1 Full O/H gasket/seal kit avail
.5MM oversize also avail @ additional cost
Shipping is for lower 48 only inquire for worldwide generally $58.99 priority mail