4478M06000 Wiseco Piston Kit for Yamaha FZR600R 1989-1999 60.00 mm

Piston Kit for Yamaha FZR600R

This Wiseco .040 oversize piston kit with part number 4478M06000 is a 60.00 mm engine rebuild component made for Yamaha FZR600R sport bikes from 1989 through 1999, restoring compression and cylinder sealing in high-revving four-cylinder engines.

Overview

This piston kit for Yamaha FZR600R gives a tired sport bike engine a fresh top end with an oversize bore. It is a .040 oversize piston kit, part number 4478M06000, with a 60.00 mm bore size. Built for riders and shops rebuilding FZR600R engines that have lost compression or scored a cylinder.

Built For Performance

• .040 inch oversize fitment with 60.00 mm bore for use after cylinder boring
• Part number 4478M06000 matches the Wiseco piston kit listing for this application
• Forged piston construction suited to the high rpm demands of a 600cc inline four
• Full kit format covering piston, rings, pin, and clips for a complete cylinder refresh
• Designed specifically around Yamaha FZR600R 1989 through 1999 machines
• Oversize bore corrects cylinder wear instead of leaving a scored bore in service

Fits These Machines

• for Yamaha FZR600R 1989
• for Yamaha FZR600R 1990
• for Yamaha FZR600R 1991
• for Yamaha FZR600R 1992
• for Yamaha FZR600R 1993
• for Yamaha FZR600R 1994
• for Yamaha FZR600R 1995
• for Yamaha FZR600R 1996
• for Yamaha FZR600R 1997
• for Yamaha FZR600R 1998
• for Yamaha FZR600R 1999

On-The-Job Use

• Top end rebuilds on high-mileage FZR600R sport bike engines
• Cylinder boring jobs where a .040 oversize piston is required
• Track and street machines that have lost compression with age
• Shop work where a matched piston kit keeps the rebuild on schedule

Specs At A Glance

Good To Know

Q: Will this piston drop into my stock cylinder? A: No, a .040 oversize piston requires the cylinder to be bored and honed to the matching 60.00 mm size before assembly. Machine work should be done by a shop that can measure piston-to-wall clearance.

Q: Does the kit include rings and a wrist pin? A: Wiseco piston kits in this format normally ship with the piston, rings, wrist pin, and clips. Confirm the contents shown in the listing photos before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.