INNTECK WP PDS Shock Spring for KTM EXC 150, EXC 250, EXC 300, EXCF 250, EXCF 350, EXCF 450, EXCF 500, XCW 125 2017-2027

The INNTECK WP PDS shock spring is designed for KTM EXC 150, EXC 250, EXC 300, EXCF 250, EXCF 350, EXCF 450, EXCF 500, XCW 125 from 2017 to 2027. 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: QS1957, QS1960, QS1963, QS1966, QS1969, QS1972, QS1975, QS1978, QS1981, QS1984, QS1988, QS1992
• Diameter: 59 mm, length: 225 mm
• Available versions: 57 N/mm: ref. QS1957; 60 N/mm: ref. QS1960; 63 N/mm: ref. QS1963; 66 N/mm: ref. QS1966; 69 N/mm: ref. QS1969; 72 N/mm: ref. QS1972; 75 N/mm: ref. QS1975; 78 N/mm: ref. QS1978; 81 N/mm: ref. QS1981; 84 N/mm: ref. QS1984; 88 N/mm: ref. QS1988; 92 N/mm: ref. QS1992

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 : ALL BALLS · PROX
• Linkage bearings : PROX 26.410089 · PROX 26.450077

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:
KTM EXC 150 2027
KTM EXC 150 2026
KTM EXC 150 2025
KTM EXC 150 2024
KTM EXC 150 2023
KTM EXC 150 2022
KTM EXC 150 2021
KTM EXC 150 2020
KTM EXC 250 2027
KTM EXC 250 2026
KTM EXC 250 2025
KTM EXC 250 2024
KTM EXC 250 2023
KTM EXC 250 2022
KTM EXC 250 2021
KTM EXC 250 2020
KTM EXC 250 2019
KTM EXC 250 2018
KTM EXC 250 2017
KTM EXC 300 2027
KTM EXC 300 2026
KTM EXC 300 2025
KTM EXC 300 2024
KTM EXC 300 2023
KTM EXC 300 2022
KTM EXC 300 2021
KTM EXC 300 2020
KTM EXC 300 2019
KTM EXC 300 2018
KTM EXC 300 2017
KTM EXCF 250 2027
KTM EXCF 250 2026
KTM EXCF 250 2025
KTM EXCF 250 2024
KTM EXCF 250 2023
KTM EXCF 250 2022
KTM EXCF 250 2021
KTM EXCF 250 2020
KTM EXCF 250 2019
KTM EXCF 250 2018
KTM EXCF 250 2017
KTM EXCF 350 2027
KTM EXCF 350 2026
KTM EXCF 350 2025
KTM EXCF 350 2024
KTM EXCF 350 2023
KTM EXCF 350 2022
KTM EXCF 350 2021
KTM EXCF 350 2020
KTM EXCF 350 2019
KTM EXCF 350 2018
KTM EXCF 350 2017
KTM EXCF 450 2027
KTM EXCF 450 2026
KTM EXCF 450 2025
KTM EXCF 450 2024
KTM EXCF 450 2023
KTM EXCF 450 2022
KTM EXCF 450 2021
KTM EXCF 450 2020
KTM EXCF 450 2019
KTM EXCF 450 2018
KTM EXCF 450 2017
KTM EXCF 500 2027
KTM EXCF 500 2026
KTM EXCF 500 2025
KTM EXCF 500 2024
KTM EXCF 500 2023
KTM EXCF 500 2022
KTM EXCF 500 2021
KTM EXCF 500 2020
KTM EXCF 500 2019
KTM EXCF 500 2018
KTM EXCF 500 2017
KTM XCW 125 2019
KTM XCW 125 2018
KTM XCW 125 2017