12A/13B Underdriven alternator pulley

HaywireRotorsport.co.nz Verified independent store

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Lightweight alternator pulley made from aircraft-grade 6061-T6 aluminium for light weight, and black anodised for great looks. Offers faster acceleration through significant reduct ion of mass having to be accelerated by the crankshaft. The effect is similar to a lighter flywheel, and the car feels more lively and willing to rev. Pulley outside diameter is 75mm. Suits early 12A and 13B rotaries through to series 5 RX-7 (vehicles with 15 mm alternator shaft). Show more