Take your standard Harrop Supercharger to the next level with one of these pulleys. The standard kits offers a 95mm pulley which is suitable for low boost applications on 91 octane. These pulleys will take your car to the next level. 100% genuine, anodized aluminum. We try to carry these locally in our inventory for quick shipping, though they frequently sell out so it may be a week at times as we refill our stocks. Belts are not included but are easily available at Rock Auto.
We recommend the following sizes/applications:
95mm: Low quality fuel/low boost (included with the kit).
90mm: Track and heavy use or E85 with the stock clutch.
85mm: Ideal for 93 octane and E85, should run on the stock fuel system.
80mm: Requires a 6PK2445 belt, this will push the stock engine and fuel system. Clutch required.
75mm: ~14 psi. Injectors and clutch required, built motor recommended.
70mm: Injectors and clutch required, built motor recommended. 6PK2440 belt. Should spin to 8000.
65mm: ~17 psi. Injectors and clutch required, built motor recommended, 6PK2440 belt. Limit revs to 7500.