or in your frame's manual if you're not sure which size you need

2x 10mm EDC spacers

The clutch uses a proprietary ratchet-and-pawl tension assembly for more durable and stronger chain management over rough terrain

Max rider weight no restriction

Also fits many external threaded types for Campagnolo

Leatt Airflex Hybrid Knee Guard - 2XL - Black Exclusive or in your frame's manualThis is the ultimate slim design knee guard with CE certification. Featuring the latest Airflex impact gel technology the knee guard is soft and flexible but extremely tough and capable of taking hard impacts. The additional sliding plate helps deflect energy, letting you get back up and keep on riding. The premium comfort comes from the soft touch fabric of the sock. The tailored design of the sock and stretch material will adapt to any leg shape and