ACS Paws 4.1 Freewheels, 20T and 22T

The ACS Paws 4.1 freewheel is a great value for single-speed riders looking for easier gearing. Available in larger 20T and 22T sizes, it offers a practical, budget-friendly way to tackle hills or enjoy a more relaxed ride. Durable construction and reliable engagement make it a solid choice for everyday riding.

Specs

• Available: 20T, 22T
• Chain Compatibility: 1/8" and 3/32"
• Type: Single-speed threaded freewheel
• Threading: 1.37" x 24 TPI (English/ISO)

Recommended Tools

Use a Park Tool FR-6 Freewheel remover tool. It has 8 prongs on the freewheel, but uses a 4-prong.

Notes

• The larger 20T and 22T sizes provide easier gearing than the 16T–18T freewheels typically offered by Wabi, making them particularly useful for hills and stop-and-go riding.
• Compatible with standard threaded single-speed hubs.
• Check chain length and rear-wheel adjustment range when switching to a larger freewheel.