INNTECK suspension shims 12 x 45 mm - pack of 10

The INNTECK 12 x 45 mm set of suspension shims is a universal part. Shims are thin steel washers stacked on the fork or shock piston. As they flex under oil pressure, they meter the oil flow: their diameter, their thickness and their order in the stack set the compression and rebound damping.

Specifications

• Brand: INNTECK
• Manufacturer part numbers: SK-12045010, SK-12045015, SK-12045020, SK-12045025, SK-12045030
• Sold in sets of 10 identical shims
• Hydraulic-grade steel
• Hole diameter: 12 mm
• Outer diameter: 45 mm
• Available versions: 0.100 mm: ref. SK-12045010; 0.150 mm: ref. SK-12045015; 0.200 mm: ref. SK-12045020; 0.250 mm: ref. SK-12045025; 0.300 mm: ref. SK-12045030

Choosing the right thickness

Pick the product matching the hole diameter and outer diameter of your shim (given in the name, e.g. 8 x 26 mm), then the thickness from the list. To rebuild a stock stack, record every shim in order as you strip it; for a revalve, start from a suspension specialist's recommendations.

When do you need them?

• Fork or shock rebuild: a bent, marked or broken shim is replaced like for like.
• Revalving to suit your weight, your level or your terrain.
• Clickers at the end of their range: the adjusters can no longer give you the behaviour you want.

Three dimensions define a shim: the hole diameter (that of the shaft running through the stack), the outer diameter and the thickness. Measure the diameter with a caliper and the thickness with a micrometer: a few hundredths of a millimetre already change the damping.

Fitting tips

1. Strip the cartridge or piston according to the manual and slide the stack, in order, onto a clean rod.
2. Measure every shim and write down the complete stack before replacing anything.
3. Replace like for like (or follow your new stack) with clean, burr-free shims, then tighten the shaft nut to the torque in the manual.
4. Reassemble with fresh suspension oil and bleed out all the air carefully.

Spare parts and items to plan

• Fork oil : LIQUI MOLY 10W 500 ml

Frequently asked questions

Why a set of 10?
A stack often uses several identical shims, and it is handy to keep spares for setup testing.

Can I revalve my suspension myself?
Yes, with a methodical approach and accurate measurements, but a badly built stack can make the suspension dangerous. If in doubt, leave the job to a specialist.

Compatibility

Universal part: check the dimensions given before ordering.