INNTECK KYB Shock Spring for KAWASAKI KX 80, KX 85, KX 100, KX 112 1990-2027

On KAWASAKI KX 80, KX 85, KX 100, KX 112 from 1990 to 2027, the INNTECK KYB shock spring fits in place of the original part. The spring rate decides the height at which the rear end works. A spring suited to your weight makes the rear more stable in the bumps, better balanced with the fork and easier to set up.

Specifications

• Brand: INNTECK
• Manufacturer part numbers: QS1740, QS1745, QS1750, QS1752
• Diameter: 55 mm, length: 255 mm
• Available versions: 40 N/mm: ref. QS1740; 45 N/mm: ref. QS1745; 50 N/mm: ref. QS1750; 52.5 N/mm: ref. QS1752

Choosing the right spring rate

First set the rider sag to the manual's value using the preload collar, then measure the static sag (bike without rider): if it is too small, the spring is too soft for you; if it is too big, it is too stiff. Then change the spring rate by one or two steps.

When to replace it?

• Impossible to get the right rider sag without tightening or loosening the preload a long way.
• The rear end bottoms out often or squats under acceleration: spring too soft.
• The rear end bounces and lacks traction: spring too stiff.
• You weigh clearly more or less than the standard rider the manufacturer designed for.

Spring rate is given in N/mm (1 kg/mm is about 9.81 N/mm). Check the shock type (KYB, SHOWA, WP with linkage or WP PDS, which has no linkage) and the dimensions: the diameter and length must match your shock.

Fitting tips

1. Remove the shock as described in the manual, with the bike supported so the rear wheel is off the ground.
2. Back the preload off completely, remove the spring seat and change the spring.
3. Refit the shock to the specified torque, then set the rider sag with the preload.
4. Rebalance the fork afterwards if needed: a higher or lower rear end changes how the front end behaves.

Spare parts and items to plan

• Shock rebuild kit : MOOSE · PROX
• Linkage bearings : ALL BALLS 85 L · PROX

Frequently asked questions

Who is a progressive spring for?
Its rate increases as it is compressed: soft at the start of the travel for comfort, firmer toward the end of the travel to resist bottoming out. It is mainly used on WP PDS shocks, which are fitted without linkage.

Compatibility

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

Fits:
KAWASAKI KX 80 2001
KAWASAKI KX 80 2000
KAWASAKI KX 80 1999
KAWASAKI KX 80 1998
KAWASAKI KX 80 1997
KAWASAKI KX 80 1996
KAWASAKI KX 80 1995
KAWASAKI KX 80 1994
KAWASAKI KX 80 1993
KAWASAKI KX 80 1992
KAWASAKI KX 80 1991
KAWASAKI KX 80 1990
KAWASAKI KX 85 2027
KAWASAKI KX 85 2026
KAWASAKI KX 85 2025
KAWASAKI KX 85 2024
KAWASAKI KX 85 2023
KAWASAKI KX 85 2022
KAWASAKI KX 85 2021
KAWASAKI KX 85 2020
KAWASAKI KX 85 2019
KAWASAKI KX 85 2018
KAWASAKI KX 85 2017
KAWASAKI KX 85 2016
KAWASAKI KX 85 2015
KAWASAKI KX 85 2014
KAWASAKI KX 85 2013
KAWASAKI KX 85 2012
KAWASAKI KX 85 2011
KAWASAKI KX 85 2010
KAWASAKI KX 85 2009
KAWASAKI KX 85 2008
KAWASAKI KX 85 2007
KAWASAKI KX 85 2006
KAWASAKI KX 85 2005
KAWASAKI KX 85 2004
KAWASAKI KX 85 2003
KAWASAKI KX 85 2002
KAWASAKI KX 100 2021
KAWASAKI KX 100 2020
KAWASAKI KX 100 2019
KAWASAKI KX 100 2018
KAWASAKI KX 100 2017
KAWASAKI KX 100 2016
KAWASAKI KX 100 2015
KAWASAKI KX 100 2014
KAWASAKI KX 100 2013
KAWASAKI KX 100 2012
KAWASAKI KX 100 2011
KAWASAKI KX 100 2010
KAWASAKI KX 100 2009
KAWASAKI KX 100 2008
KAWASAKI KX 100 2007
KAWASAKI KX 100 2006
KAWASAKI KX 100 2005
KAWASAKI KX 100 2004
KAWASAKI KX 100 2003
KAWASAKI KX 100 2002
KAWASAKI KX 100 2001
KAWASAKI KX 112 2027
KAWASAKI KX 112 2026
KAWASAKI KX 112 2025
KAWASAKI KX 112 2024
KAWASAKI KX 112 2023
KAWASAKI KX 112 2022