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The HKS Step2 forged piston kit is specified for RB26 applications with an 86.5mm bore. As a boxed piston set, it replaces factory pistons to match that bore size and is intended for rebuilds or engine upgrades that call for forged pistons. Use it where the RB26's bore and rebuild specifications match the 86.5mm dimension.
HKS Step2 Forged Piston Kit For RB26 - 86.5mm Bore
