Hot Cams 8.90mm Complete Shim Kit HCSHIM00 for KTM 2005-2017 — 0.04mm Steps, 4140 Steel

Hot Cams 8.90mm Complete Shim Kit HCSHIM00 supplies a full set of precision shims for shim-under-bucket valve adjustments on a wide range of KTM four-stroke models from 2005–2017.

This kit gives you a complete assortment of hardened steel shims in fine 0.04 mm increments so you can restore correct valve clearances without hunting for individual sizes. Each shim is forged from durable 4140 steel and laser-etched with its thickness for fast identification during routine maintenance or a race-weekend service. The set covers sizes from 1.72 mm up to 2.60 mm and includes three pieces at every step for spare options and repeated adjustments.

Which KTM models will these shims fit?

The Hot Cams HCSHIM00 kit was selected to match the shim-under-bucket valve systems used on many KTM 250, 350, 450 and 500 four-stroke bikes produced between 2005 and 2017. Check your engine service manual to confirm shim-under-bucket sizing before ordering, but this kit covers most common OEM shim ranges for those model years.

• Covers KTM 250 SX-F, 250 XC-F, 250 XCF-W model years included in the range
• Includes fitments for KTM 350 EXC-F, 350 SX-F, 350 XC-F and 350 XCF-W years listed
• Fits various 450 and 500 EXC / SX-F / XC-F / XC-W machines in the specified years
• Complete listing available in product specs to verify exact model and year

How precise are the shim increments and why does that matter?

Each shim size in the kit increases by 0.04 mm, letting you fine-tune lash to within a tight tolerance window. Smaller increment steps mean less guesswork and fewer repeated removals of the cam carrier to arrive at the specified valve clearance, which saves time and reduces wear from repeated disassembly.

• 0.04 mm step increments for accurate clearance adjustment
• Three shims per thickness to provide spares or to stack when needed
• Laser-etched thickness marking for immediate selection without measuring tools
• Forged 4140 steel construction for consistent dimension stability

What durability and marking features help in a workshop setting?

Hot Cams forges these shims from 4140 high-strength steel to resist deformation under repeated service intervals. Each shim has its thickness laser-etched onto the face so you can pick the right shim quickly during a multicycle valve job rather than measuring every piece with micrometers.

• 4140 steel resists wear and maintains thickness over many adjustments
• Laser etching prevents size markings from rubbing off in an oily environment
• Three shims per size let technicians keep spares or match nonstandard clearances
• Organized kit reduces downtime between valve checks

The kit also includes a limited one-year coverage for manufacturing defects, giving some additional reassurance when swapping out dozens of small parts during a valve service.

Who is this kit for? Motorcycle mechanics, private racers and owners of KTM four-stroke dirt bikes from the covered model years who perform shim-under-bucket valve maintenance will benefit most. If you regularly service valve clearance on KTM 250–500 four-stroke models listed for 2005–2017, this set removes the need to source individual shims and speeds up precise clearance setting. For riders who prefer professional shop service, bringing this complete set to your mechanic ensures the correct shims are on hand for accurate, single-visit valve adjustments.