When installing an extended crankshaft (stroker crankshaft) in you GY6 engine you will have to use a cylinder spacer and longer timing chain.  You may also need a longer timing chain with some large valve cylinder heads and 4 valve heads.

We have high quality 92, 94 and 96 Link Taiwan made timing chains.

If you use:

• Taida large valve head with 3mm (3000 micron) extended crankshaft you need a 92 link timing chain.
• Taida large valve head with 8.2mm (8200 micron) extended crankshaft you need a 94 link timing chain.
• Taida 4 valve cylinder head with 8.2mm (8200 micron) extended crankshaft you need a 96 link timing chain.