ProX 29.890176 Valve Shim for KTM 8.90 x 1.76mm (5-Pack)

The ProX 29.890176 is a single-size refill kit of five precision valve shims designed for KTM applications, measuring 8.90mm outer diameter x 1.76mm thickness. These valve adjuster shims are an affordable, OEM-quality solution for restoring proper valve clearance during routine engine maintenance on KTM dirt bikes, motocross, and off-road motorcycles.

Key Features:

• Premium heat-treated steel construction for exceptional hardness, durability, and reduced wear over time
• Precision machined to exact thickness tolerances, ensuring accurate valve lash adjustment
• Designed to OEM specifications for reliable fitment and performance in high-RPM and extreme conditions
• 8.90mm outer diameter — correct sizing for KTM engine applications
• 1.76mm thickness — sold as a single-size refill kit for targeted valve clearance correction
• Packed in a convenient 5-piece kit, providing extras for multi-valve engines or future service intervals

ProX valve shims are available across a wide range of thicknesses (1.20mm to 3.50mm, incremented by 0.025mm), making it easy to dial in the exact clearance your engine requires. Part number 29.890176 is compatible with KTM 8.90mm valve shim applications and is a cost-effective alternative to expensive OEM replacement shims.