This is about wheel drive belts, chains and sprockets on dual belt or belt & chain models. The bigger the shaft sprocket, the more the torque or low end pulling power, while smaller provides more top speed. we offer 12 & 13 toothed hardened shaft sprockets. Wheel sprocket is the same principal. small=speed & large=torque/pull. Cobra & The Rock & Nuke are 20 tooth shaft/belt gear to 60 toothed wheel belt gear=ratio 1:3 which provides good speed on 9 inch tire. most other models are: 1:3.16 or 1:3.95 gear ratio which provides good torque. big wheel models are 1:5.1 select your factory or custom gear ratio by selecting 1 of 2 available #35 Chain Drive shaft/hub mount sprockets and many different wheel plate style sprockets. shaft sprockets have set screw, but must be welded to shaft after determining correct position & tracking. wheel sprockets are bolt on. call scooterman @ 256.468.2761 u.s.a. english for assistance in ordering custom chain drive.

#35Chain1/2Link

#35 Chain 47 inch W/Master Link For Big Wheel Models Using 52 or 60 tooth wheel sprockets & 12 tooth shaft sprockets. This chain is 128 pins including master link

12:52 Chain Drive Big Wheel Speed Kit #35 Chain Drive Kit 12:52 Replaces: 1000-5M-15 belt 1000-5M-18 belt 1000-5M-20 belt #35 ansi roller chain kit for: Chuweng Raser big wheel with 145/70-6 size tires and 6 inch wheels. Also FITS Xcooter Thunder, Saloor Big Wheel, Sonic Big Wheel, THS Big Wheel, Desert Storm Big wheel, Steeple Big Wheel, PanthR Big Wheel, AND OTHER MODELS using 145/70-6 rear tire. Kit includes #35 ansi chain & master link (This chain is 128 pins including master link) a 12 tooth #35 shaft sprocket and a 52 tooth #35 wheel sprocket, one 1/8 roll pin and one 1/8 inch drill bit. This 12:52 kit is a gear ratio of 1:4.3 The factory sprocket on the shaft is 20 tooth and the factory wheel sprocket is a 102 tooth 5m belt drive. The factory gearing is 1:5.1 This chain drive set is 1:4.3 For factory chain drive gear ratio of 1:5 see our 12:60 Chain drive kit for big wheel scooters. This 52 tooth sprocket is the same as oem sprocket for "The Rocky" but the shaft sprocket is totally different so this is not for "Cobra Extreme" or "The Rocky"

12:60 Chain Drive for Big Wheel OEM gear ratio Kit #35 Chain Drive Kit 12:60 Replaces: 1000-5M-15 belt 1000-5M-18 belt 1000-5M-20 belt #35 ansi roller chain kit for: Chuweng Raser big wheel with 145/70-6 size tires and 6 inch wheels. Also FITS Xcooter Thunder, Saloor Big Wheel, Sonic Big Wheel, THS Big Wheel, Desert Storm Big wheel, Steeple Big Wheel, PanthR Big Wheel, AND OTHER MODELS using 145/70-6 rear tire. Kit includes #35 ansi chain & master link (This chain is 128 pins including master link) a 12 tooth #35 shaft sprocket and a 60 tooth #35 wheel sprocket, one 1/8 roll pin and one 1/8 inch drill bit.The factory sprocket on the shaft is 20 tooth 5m and the factory wheel sprocket is a 102 tooth 5m belt drive sprocket. The factory gearing is 1:5.1 This 12:60 chain drive kit is 1:5 ratio For top speed chain drive kit on a "Big Wheel Scooter" see our 12:52 kit which is a gear ratio of 1:4.3 and a Chain drive kit for big wheel scooters only, see exclusion below. This 52 tooth sprocket is the same as oem sprocket for "The Rocky" but the shaft sprocket is totally different so this is not for "Cobra Extreme" or "The Rocky"

#35 Chain Master Link

#35 Chain Stainless Steel 1/2Link

#35 Chain Stainless Steel 47inch With Master Link

#35 Chain Stainless Steel Master Link

#35-12 & 13 Toothed Shaft Sprocket For Big Wheel Models Available Momentarily 13 tooth is for added torque. Select desired sprocket.

#35 Sprocket For Wheel On Big Wheel models 52 tooth. can be used on 10 inch tire for torque or big wheel model for speed. This is the Cobra Extreme or Rocky factory wheel sprocket. This is for speed. for factory ratios on Raser big wheel order 60 tooth.

#35 Sprocket For Big Wheel. 60 tooth hardened sprocket p/n 2299k321