336-694-3059

Call to order 608-842-0680

Availability: Built to order

Price: $2395

YZ167 Specifications:
Fits 1997-Current YZ125 / YZ125X

Product Description

Bore: Yes (60mm)

Stroke: Yes(59mm)

Actual Displacement = 166.82cc

This is it, the ONE and ONLY YZ167. It is our most asked about kit for the YZ125 and it has been for many years. This kit is very popular with Vet racers of all levels and works well no matter how you ride it. It can be lugged like a 250 or screamed like a 125, it does both equally well. Put a flywheel weight on it and it is one of the best woods engines you will ever find.  It is so much fun and completely un-detectable by looking at it from the outside.  However the exhaust note WILL give you away.

Engine Modifications Included:

This is a complete engine build.  It requires you to send us your YZ125 engine and we will modify it to a YZ167.

Cylinder: Bore, Port and Replate with Ceramic Nickel Bore coating.

Power Valves: Precision Machined to exact specifications.

Head: Re-chambered to work with the custom Wiseco Big Bore piston and stroker crank. 100 octane suggested for most conditions.

Crankshaft: Stroked and balanced.

Crankcase: Modified to clear stroker crank and larger piston.

Blueprint: Calculate deck height, squish clearance, trapped volume, port timing and compression ratio and list on your personal Spec-Sheet.

Notes: This kit requires you to send us your entire engine for modification with kick starter and shifter.

Notes: Prices listed are to install stroker kit parts in good condition engine. Should your engine need rebuild parts there will be additional charges. We will call for approval before we install any parts that will have additional charges. (example: rod kit, mains, main seals, trans parts)

If you are looking for a budget bike build up the best years for this mod was 01-03 followed closely by 05-Current.