8-Speed Sachs Freewheel Vintage Racing Bike 1993 13-25 BSC 1.375x24 Eroica RC20

The 1993 Sachs 8-speed freewheel delivers a 13-25 tooth spread that suits rolling terrain and quick transitions. The small 13-tooth sprocket lets you push hard on descents or fast sections, while the 25-tooth bottom gear gives you a usable climbing ratio without a huge jump between cogs.

What this Sachs block brings to a classic drivetrain

Threaded to the British standard BSC 1.375×24, this freewheel screws directly onto a compatible hub. The steel sprockets are cut for period indexing and respond cleanly to chain engagement. Whether you are rebuilding a late-80s or early-90s road machine, the 8-speed spacing puts you right in the era when indexed shifting became the norm.

Photos form part of the description. They show the tooth profiles, the finish and the threading, so you get the full picture of what you are fitting.

Key specifications

• Oxidation: No
• Country of origin: France
• Material: Steel
• Freewheel – Cassette: 8-speed
• Manufacturer part number: 0000

For a slightly wider range from the same era, the 7-speed Sachs 12-26 from 1993 adds a lower climbing gear. If you prefer a later block with the same 13-25 range, the Sachs 8-speed from 1998 is another period-correct option.