The all-new Apico oversized Snail Cam/Chain adjusters for all modern trial bikes using a 17mm rear spindle. You can now get the maximum use out of your chain with these oversized snail cams and they look Factory at the same time. The adjustment goes from the same shortest point as our standard snail cams but then adjust way back as the chain stretches with their large offset curve. These oversize snail cams could prove to be an invaluable component for events like the SSDT and other long-distance trials. Manufactured using Aero grade aluminium, these CNC machined over-sized snail cams are available in a range of colours to suit most manufacturers bikes using a 17mm rear spindle. The cams allow you to adjust the chain quickly without removing any links.