MX-TECH Low-Friction Shock Piston Ring Kit KAYABA 40 mm for YAMAHA YZ 80, YZ 85 1997-2026

On YAMAHA YZ 80, YZ 85 from 1997 to 2026, the MX-TECH KAYABA 40 mm PB01KYPB-0003 shock piston ring kit fits in place of the original part. The shock piston ring (piston band) seals between the piston and the body: the oil has to pass through the valves, not around the piston. This kit replaces the original ring with a low-friction ring fitted over an O-ring.

Specifications

• Brand: MX-TECH
• Manufacturer part number: PB01KYPB-0003
• EAN code: 01000320
• O-ring included

When to replace it?

• Piston ring worn or scored at service.
• Damping that fades as the shock heats up.
• Shock service or tuning.

Check the make and the piston diameter of your shock (in the name). This job is done with the shock taken apart and drained of nitrogen: it is meant for workshops and properly equipped mechanics.

Fitting tips

1. Release the nitrogen and take the shock apart following the manual.
2. Remove the old ring from the piston without scratching the groove.
3. Fit the O-ring and then the ring, refit the piston and bleed the shock before recharging the nitrogen.

Spare parts and items to plan

• Shock rebuild kit : PROX · PIVOT WORKS

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YZ 80 2001
YAMAHA YZ 80 2000
YAMAHA YZ 80 1999
YAMAHA YZ 80 1998
YAMAHA YZ 80 1997
YAMAHA YZ 85 2026
YAMAHA YZ 85 2025
YAMAHA YZ 85 2024
YAMAHA YZ 85 2023
YAMAHA YZ 85 2022
YAMAHA YZ 85 2021
YAMAHA YZ 85 2020
YAMAHA YZ 85 2019
YAMAHA YZ 85 2018
YAMAHA YZ 85 2017
YAMAHA YZ 85 2016
YAMAHA YZ 85 2015
YAMAHA YZ 85 2014
YAMAHA YZ 85 2013
YAMAHA YZ 85 2012
YAMAHA YZ 85 2011
YAMAHA YZ 85 2010
YAMAHA YZ 85 2009
YAMAHA YZ 85 2008
YAMAHA YZ 85 2007
YAMAHA YZ 85 2006
YAMAHA YZ 85 2005
YAMAHA YZ 85 2004
YAMAHA YZ 85 2003
YAMAHA YZ 85 2002