Authentic Kohken Avanza Mechanical Clutch Holder 29mm Black Pivot For Brembo Corsa Corta Lever (Part #KB2010LNBC)
The Kohken Avanza mechanical clutch holder with a 29mm ratio (Part #KB2010LNBC) is a mechanical masterpiece, precisely machined from Billet Aluminum Alloy and hard anodized in Japan. According to the reference document Screenshot 2026-08-20 at 17.53.50.jpg, the base holder unit KOK-2085 (Avanza L-29mm Holder only) is explicitly designed to be completely compatible with a Brembo Corsa Corta half lever. This 29mm lever ratio offers a perfectly balanced light clutch operation and quick disengagement at a high level. Furthermore, this premium setup features the upgraded black X-coated holder pivot bolt (KOK-20841BK) and an exclusive 6-step lever adjustment dial equipped with a highly convenient one-touch function.
TECHNICAL SPECIFICATIONS | Kohken Avanza 29mm Clutch Holder
CRITICAL INSTALLATION & TECHNICAL GUIDE
The installation of this high-performance clutch holder requires the technician to understand the following specific technical characteristics:
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The 29mm Ratio [L-29mm] Characteristics: Use this specific ratio if you need a balanced combination of light operation and clutch disengagement at a high level. The clutch operation is not as light as that of the "L-24 mm" version but remains significantly lighter than the original factory part. The clutch disengagement is also relatively quick.
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Cable Installation Requirements: At least 38 mm of clearance is required between the outer cable end and the cable barrel end center (at least 40 mm is required if a cable spacer is used). The cable barrel end diameter is φ8 (if a plastic cover is attached to the barrel end, it may need to be removed), and the outer end diameter is φ9/φ8 (using a cable spacer).
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Crucial Technical Warning: This product is exclusively designed for cable clutch vehicles. When used as an aftermarket replacement, the lever ratio will change. Because of this ratio change, the cable stroke decreases relative to the lever stroke. Depending on the vehicle model or the specific lever position setup, the clutch may not be completely disengaged.
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General Purpose Disclaimer: The degree of clutch mitigation varies depending on the specific vehicle, and complete mitigation is not unconditionally guaranteed for all motorcycles. As a general-purpose product, mounting issues due to physical interference may occur on certain motorcycle builds.
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