We offer two pulley kit options to help safely increase power. Our main underdrive pulley is design to underdrive the waterpump and alternator approximately 15% which gives you an increase in power and reduces cavitation of the waterpump at high RPMs We also offer a Alternator Dual Belt PowerPulley setup which underdrives the alternator by 20% and also allows you to run dual belts across the alternator and water pump when you’re no longer using the air pump.

 

The RP Main Power Pulley is designed to underdrive the waterpump and alternator approximately 15% which gives you an increase in power and reduces cavitation of the waterpump at high RPMs. This CNC machined, anodized aluminum pulley is still compatible with the stock air conditioning pulley and has timing marks provided at 10 and 0 degrees ATC and at 10 and 20 degrees BTC. This modification can be installed in approximately 1 hour using normal hand tools.

RP Main Power Pulley
Price: $74.88

 

 

The RP Alternator Dual Belt Pulley is computer designed to reduce the alternator RPM by 20%. This CNC machined, anodized aluminum pulley is compatible on cars with or without the air pump. On cars that no longer use the air pump, we’ve seen that occasionally the belt to the water pump will slip at high RPMs due to the air pump-waterpump belt missing. This can cause insufficient cooling to the engine and increases the likelyhood of severe damage. To remedy this, we recommend using both these pulleys in a dual belt configuration.

RP Alternator Dual Belt Pulley
Price: $49.88

 

Engine mounts are a common failure on 2nd gen RX-7s. Replace yours with a pair of Mazda factory performance mounts. These mounts were designed for the limited production MazdaSpeed cars of Japan and are available now in the US. These mounts are about twice the rigidity of the originals, but are still noise-free. Installation is a direct bolt in with no modifications. Sold individually.

Note: two motor mounts are needed per car.

Mazda Hardened Motor Mount
Price: $39.95 each