These rings will fit all Mercury 4 Cyl. 100 HP 89-91 Inline 4 Loop Charge W Boost Port Bottom Guided . WSM Rings are top quality RIK Japanese high performance rings. Will fit OEM factory pistons.
Wiseco rings will fit Wiseco forged piston only.
Ring set includes:
1 Top ring
1 Bottom ring
O.E. No. 96170A12
This ring set will fit the following applications only,
Mercury 4 Cyl. 100 HP 89-91 Inline 4 Loop Charge W Boost Port Bottom Guided
