Quad bike crankshafts and parts

Check the engine and build specification

Use the full model, year and engine details, including any changes to the original engine. Read the stated stroke and other specifications where provided. Listings described as stroker options need to be checked against the intended build and the manufacturer's requirements, rather than selected by model name alone.

Establish what the assembly or kit includes

Compare the supplied-parts lists for the references you are considering. Do not infer the inclusion of bearings, seals, connecting rods or other components from the word “assembly” or “kit”. Browse engine bearings and gaskets and seals for separate requirements, checking each part's own application.

Does a crankshaft kit include bearings and seals?

Only rely on the contents stated for that exact reference. Identify any separately required components before ordering, and check the quantities supplied. Similar kit names can describe different contents.

Can I select a stroker crankshaft using the vehicle model alone?

Check the complete build requirements with your engine builder before choosing it. Compare the stated crankshaft specification with the intended piston, cylinder and other required components. A matching vehicle name does not establish that it suits the engine as currently configured.

Where should I look for a separate connecting rod or rod kit?

Browse connecting rods and parts and check the exact component reference and contents. A separate rod listing should not be treated as a complete crankshaft assembly. The wider crankshafts and connecting rods category covers both routes.

What information helps when the engine has already been modified?

Identify the engine and fitted crankshaft references, together with the build specification and any relevant changes. Have those details checked before selecting a replacement. The vehicle's original application may no longer describe the components required.