Hot Rods – UTV / Side-by-Side, including crankshafts, crankshaft and rod kits, bottom end kits and connecting rod bolt kits for machines like the Polaris RZR 900 XP, RZR 4 900 XP, Ranger XP 1000 and Can-Am Commander 800 and 800R. Side-by-sides carry weight, tow, haul passengers and still get driven flat out, and that combination loads a crankshaft harder than anything else in the category. Add a tune, a clutch kit or a set of heavy tires and the rod bearings are the first thing to complain. When a UTV engine develops a knock under load or drops oil pressure at temperature, the bottom end is where the repair starts. Hot Rods builds forged cranks and rod kits with the bearing spec and fillet strength for that duty, so a rebuilt engine handles the same work without becoming a yearly job. Replacing rod bolts with a fresh kit at the same time is cheap insurance, because stretched fasteners are what turn a good rebuild into a hole in a case. Everything is listed by year and model, and twin-cylinder parts are specific to the engine. Give us the machine details and we will confirm the correct kit before you order.