The ACS Claws is a classic old-school/mid-school BMX freewheel, prized by collectors and restorers building period-correct race and freestyle bikes. Chromoly construction gives it durability well beyond typical department-store freewheels, and it's a common upgrade or replacement part for anyone restoring a late-80s/90s BMX build. This is the 20T version, a common gearing choice for BMX race and street setups of that era.

Specifications:

Brand: ACS

Model: Claws

Era: Old School / Mid School BMX (approx. late 1980s–1990s)

Thread: English (1.37" x 24tpi) — standard Claws thread, not confirmed Southpaw/left-hand

Teeth: 20T

Chain compatibility: 3/32"

Material: Chromoly body