Suzuki LTR450 Big Bore Engine Rebuild Kit: Athena 100mm Cylinder, Stroker Crank, CP Piston

Ready to build a serious LTR450?

This is the motherlode of engine rebuild kits.

We’ve bundled top-shelf parts from Athena, CP, Carrillo, and Hotrods to give you everything you need to punch your LTR out to a mean 516cc stroker.

It’s a complete kit—new, all in one box.

Here’s what’s inside: an Athena 100mm big bore cylinder, a Hotrods stroker crankshaft, a forged CP piston with rings and wrist pin, complete gasket set, and all the necessary bearings (rod and crank).

It’s all there.

The manufacturer part numbers are a list: A-LTR-100-CG for the cylinder, plus the piston and crank kits.

It supersedes Suzuki OEM numbers like 12100-45840, 11211-45G00, and 12200-45G11.

This is a full bottom and top end kit.

Everything is made in the USA, designed for serious performance and durability.

It’s sealed, corrosion-resistant, and built to take a beating.

If you’re rebuilding a blown motor or just want to upgrade to a stroker, this is the complete package.

One year warranty included.

A warning for California residents: this product can expose you to chemicals.