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Forged Piston & Long Rod Combo for GX420s
Forged Piston & Long Rod Combo for GX420s

Our Price: $275.00

Stock Status:In Stock

Description -

90mm Forged Flat top and Long Billet Rod combo
This kit can produce significant more HP more than the stock rod & piston. Kit uses special long length rod and custom flat-top piston so that it fits a stock bore in a 420 Predator without any machining or boring.
Includes Piston, Rod, Rings, Bearing, & Wristpin

Piston: 90mm Diamond Forged Flat-Top (choice of compression height)
Rod: ARC 4.450 (+.040) rod
Bearing: Tri Metal
Rings: 3 Pc Moly
Wristpin: HD Tool Steel
Note: On used blocks, a light hone may be needed for proper ring seat & bore must be straight)
Slight grinding on crank counterweight or on camshaft may be needed to clear rod.

Kit is available with either a standard height compression height (.700 from top of pin to top of piston) or .050 shorter (.650). Typically most OHV will use the std height pistons while 420 Hemis use the shorter piston. It is recommended you measure your current piston to aid in selecting correct kit. Rod is .040 longer which will reduce piston to deck by that amount.
Warning: You must have a at least .020 between head and piston

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