Enhance your bike's shifting performance with this precision-engineered Derailleur Hanger Extender, designed for superior compatibility, durability, and stability. Crafted from high-quality AL6061 aluminum alloy with locking screws made from robust AL7075 aluminum alloy, this extender offers a lightweight yet strong solution for both mountain and road bikes. Key Features: · Hollow-Out Lightweight Design: Combines aesthetic appeal with strength, providing a durable extender that reduces weight without compromising performance or longevity. · Enhanced Compatibility: Features a 28.9mm center distance, perfectly matching mountain bike chainrings sized 40/42/46/50/52T and road bike chainrings sized 34/36/40/42T for broad adaptability. · Optimal Length for Stability: With a total length of 50.8mm, it balances compatibility and stability, ensuring smooth shifting without the drawbacks caused by too short or too long center distances. · Upgraded Structure & Precision Adjustment: Offers accurate derailleur positioning with an increased fine-tuning range by eliminating limit stops, resulting in faster and more responsive gear changes. · Anti-Looseness Tail Hook Design: The tail hook fitting surface is engineered with radial grooves to enhance friction, preventing loosening due to vibration during rides. · High-Strength Locking Screw: Constructed from premium 7075 aluminum alloy, the locking screw provides greater torque resistance, ensuring secure attachment and long-lasting reliability. Specifications: · Material: Main Body AL6061 Aluminum, Screw AL7075 Aluminum · Model: RA105 · Center Distance: Approx. 28.9mm / 1.1in · Total Length: Approx. 50.8mm / 2.0in · Recommended Torque Value: 15-20N·m · Quantity: 1 Piece · Color Options: Black, Red Package Includes: · 1 x Derailleur Hanger Extender This Derailleur Hanger Extender is the perfect upgrade for cyclists seeking enhanced gear shifting accuracy and stability. Its durable construction and precise design ensure reliable performance under varied riding conditions while offering effortless adjustment and increased resistance to vibration-induced loosening. Ideal for mountain and road bike enthusiasts who demand quality and precision in every ride.