YFZ478R/X ATV Stealth – Max Power Built

Please call to order 608-842-0680

Availability: In stock.

Regular Price: $550.00

Special Price: $499.00


Quick Overview

YFZ478R/X STEALTH Specifications:
Fits: 2009-2010 Yamaha YFZ450R/X ATV


Choose Option:

“Bolt on” – Includes cylinder : call for price


Product Description

Bore: Yes

Stroke: No

Actual Displacement = 478.23cc



Cylinder bore and re-plate with Nickle Ceramic

CP or Wiseco Piston kit – Your Choice

Necessary Gaskets


Notes: This is a 98mm bored and Nickle Ceramic plated OEM Yamaha cylinder.

At 3mm over it is starting to push the stock casting to the edge, however it remains quite reliable and we only really see issues when customers try to run stroker crankshafts with them. In other words, with a stock stroke they work well, add stroke and you will have problems.

It is a good choice where you need to rebuild the engine, want to bump the power, have limited funds, and do not want to add stroke later down the road.

Max Power’s Nickle ceramic bore coating is the best available and Max Power’s plating craftsmanship far surpasses the quality of anything else out there. (Just ask builders like Pro Circuit, Duncan Racing, ATP, Rossier Engineering, CT Racing or any of the factory teams- We plate cylinders for all of them).

This is the largest bore on an OEM cylinder (without a thicker sleeve) that you should use.

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