INNTECK WP Shock Spring for KTM SX 85, SX 105, HUSQVARNA TC 85 and GAS GAS MC 85 2004-2027

On KTM SX 85, SX 105, HUSQVARNA TC 85 and GAS GAS MC 85 from 2004 to 2027, the INNTECK WP 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: QS1130, QS1135, QS1140, QS1145, QS1150, QS1155, QS1160
• Diameter: 59 mm, length: 220 mm
• Available versions: 30 N/mm: ref. QS1130; 35 N/mm: ref. QS1135; 40 N/mm: ref. QS1140; 45 N/mm: ref. QS1145; 50 N/mm: ref. QS1150; 55 N/mm: ref. QS1155; 60 N/mm: ref. QS1160

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 : PROX · ALL BALLS
• Linkage bearings : 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:
GAS GAS MC 85 2027
GAS GAS MC 85 2026
GAS GAS MC 85 2025
GAS GAS MC 85 2024
GAS GAS MC 85 2023
GAS GAS MC 85 2022
GAS GAS MC 85 2021
HUSQVARNA TC 85 2027
HUSQVARNA TC 85 2026
HUSQVARNA TC 85 2025
HUSQVARNA TC 85 2024
HUSQVARNA TC 85 2023
HUSQVARNA TC 85 2022
HUSQVARNA TC 85 2021
HUSQVARNA TC 85 2020
HUSQVARNA TC 85 2019
HUSQVARNA TC 85 2018
HUSQVARNA TC 85 2017
HUSQVARNA TC 85 2016
HUSQVARNA TC 85 2015
HUSQVARNA TC 85 2014
KTM SX 85 2027
KTM SX 85 2026
KTM SX 85 2025
KTM SX 85 2024
KTM SX 85 2023
KTM SX 85 2022
KTM SX 85 2021
KTM SX 85 2020
KTM SX 85 2019
KTM SX 85 2018
KTM SX 85 2017
KTM SX 85 2016
KTM SX 85 2015
KTM SX 85 2014
KTM SX 85 2013
KTM SX 85 2012
KTM SX 85 2011
KTM SX 85 2010
KTM SX 85 2009
KTM SX 85 2008
KTM SX 85 2007
KTM SX 85 2006
KTM SX 85 2005
KTM SX 85 2004
KTM SX 105 2015
KTM SX 105 2014
KTM SX 105 2013
KTM SX 105 2012
KTM SX 105 2011
KTM SX 105 2010
KTM SX 105 2009
KTM SX 105 2008
KTM SX 105 2007
KTM SX 105 2006
KTM SX 105 2005
KTM SX 105 2004