We build 100 engines per year, from 250cc to 700cc. Others may copy our MX Locker listings, but they cannot copy our knowledge.

This base price includes the following:

Tearing down and splitting cases of your YFZ 450 engine.

Inspecting all parts

Cleaning all parts

Checking all bearings

Complete engine gasket set (standard bore only)

Complete engine seal set

New Hotrods crank

New clutch kit

Resurfacing cylinder

Resurfacing Head

Polishing cam journals if needed

Shimming valves

New valve seals

New timing chain

New Piston - compression of your choice up to 13.5:1. (standard bore only)

ADDITIONAL SERVICES:

Please browse my MX Locker store for additional services such as port & polish, combustion chamber work, valve seat cutting, cylinder head shaving, cam journal repair, or powder coating engine parts.

SHIPPING:

I do not recommend shipping your engine in a cardboard box. PLEASE ship your engine in a 60 quart Igloo cooler on wheels with the lid screwed shut. I have included a photo of the cooler for your reference. 

*** Sorry but I cannot be held liable for shipping damages in either direction. We ship about 100 engines per year, each one is packaged carefully. PLEASE ship your engine in a 60 quart Igloo cooler on wheels with the lid screwed shut. ***

TURN AROUND TIME:

Typical turn around time is 3 - 4 weeks. Build time will be based on the amount of damage / parts needed for your engine. Some specialized parts may take longer to receive. Or if you want a used part (such as an engine case) I will need time to hunt it down. I do believe in prompt service and excellent communication.

WHAT YOU CAN EXPECT:

• Prompt service

• Excellent Communication

• Pictures of your project sent via text

• Excellent prices on needed parts

• Honesty

• Safe return shipping


WARRANTY INFORMATION

A limited 30 day warranty will start the day you receive your engine back from us.

Yamaha YFZ 450 Engine Rebuild SERVICE - YFZ450

Yamaha YFZ 450 Engine Rebuild SERVICE - YFZ450

Yamaha YFZ 450 Engine Rebuild SERVICE - YFZ450

Yamaha YFZ 450 Engine Rebuild SERVICE - YFZ450

Yamaha YFZ 450 Engine Rebuild SERVICE - YFZ450

ATV PARTS