Muc-Off Precision Chain Keeper and Frame Protector

Even without the rear wheel, the drivetrain remains secure and optimally tensioned. The Precision Chain Keeper replaces the rear wheel and cassette, reliably keeping the chain under tension—ideal for cleaning, maintenance, transport, and storage of the bike. This compact and lightweight tool was designed for use in the workshop, during racing, and on the go. While the rear wheel is removed, the drivetrain remains fully accessible and can be cleaned, lubricated, and serviced with ease. At the same time, the Chain Keeper protects the frame during transport and storage. The controlled chain guidance prevents unnecessary chain movement, thereby reducing the risk of chain slap, scratches, and damage to the drivetrain. The well-designed axle system supports the rear frame area when the rear wheel is removed. This prevents excessive compression of the frame and reduces stress on the dropouts during transport and storage. Thanks to compatibility with quick-release skewers and 12 mm thru-axles, the Precision Chain Keeper is suitable for numerous types of bicycles—from commuter and road bikes to mountain bikes, gravel bikes, and e-bikes.

Benefits at a glance
Keeps the chain tensioned—The chain remains securely guided even with the rear wheel removed.
Ideal for drivetrain maintenance—Perfect for cleaning, lubricating, and servicing the entire drivetrain.
Wide compatibility—Suitable for most commuter, road, MTB, gravel, and e-bikes.
For quick-release and thru-axles—Compatible with quick-release and 12 mm thru-axle systems.
Includes QR adapter—Push-fit adapters for quick-release skewers are included and can be removed if needed.
QR width range: 100–160 mm
Thru-axle width range: 97–157 mm
CNC-machined 6061 aluminum—High-quality and robust construction with a durable anodized finish.
Lightweight and durable—Ideal for regular use in the workshop,