S&S Cycle Camshafts — 1991-2016 Harley-Davidson Sportster

S&S Cycle 555 camshafts for 1991–2016 Harley-Davidson Sportster engines, ground for peak power delivery between 3500–6500 rpm on 89–100 cubic inch displacement mills. Best results with ported stock heads or S&S cylinder heads and 9.5:1 to 11.5:1 compression ratio.

Features

• Optimized power band 3500–6500 rpm
• Works with ported stock or S&S heads
• Requires adjustable pushrods and high-lift valve springs
• Normal valve clearance checks required

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 33-5084
• Category: Engine Components / Camshafts
• Weight: 4.37 lb

Fitment

Fits 1991–2016 Harley-Davidson Sportster models with 89–100 cubic inch displacement engines.

Frequently Asked Questions

Will these work on my stock Sportster heads?

Yes, but performance is best with ported heads. Stock heads will work; S&S or quality porting maximizes the cam's potential.

Do I need to change pushrods and valve springs?

Yes — adjustable pushrods, high-lift valve springs, and spring spacing are required for proper valve clearance and operation.

What compression ratio do I need?

These cams are recommended for 9.5:1 to 11.5:1 compression ratio. Check your engine's CR before ordering.

Will these fit 2017+ Sportster models?

No — this part is for 1991–2016 Sportster chassis. 2017-and-newer models use different engine architecture.

Do I need to rejet my carburetor?

Fuel tuning depends on your full setup (heads, intake, exhaust). Dyno tuning is recommended for best results.