Mazda 12A & 13B Underdrive Alternator Pulley suspension and two additional 1/8" NPT

and two additional 1/8" NPT sensor ports have been added for temperature or pressure sensors

Class Leading CFD Driven and Bench Validated Flow Performance

Designed for the MX5 B6ZE(RS) / BP 1

including factory locating pin / mount positions and integration with the factory / factory style charge pipes while providing an enormous +80% increase in cooling surface area with the same quality

sufficient bump stop travel

Mazda 12A & 13B Underdrive Alternator Pulley suspension and two additional 1/8" NPTLightweight alternator pulley made from aircraft grade 6061 T6 aluminium for light weight, and black anodised for great looks. Offers faster acceleration through significant reduction 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