Tripeak Oversize Pulley Kit 11/18T, Ceramic Bearing (Shimano GRX 2X)

The Tripeak Oversize Pulley Kit makes upgrading simple and accessible. With the AOPW system, riders can swap to the larger 18T pulley using only a common hex wrench. No complicated adjustments are required—just install and ride with immediate gains in smoothness and speed.

18T Tension Pulley for Smoother Shifts: Compared to standard 11T pulleys, the 18T oversized design reduces chain deflection and rotational resistance. This results in smoother chain movement, improved stability and enhanced pedaling efficiency, especially on demanding rides.

Hollow Frame for Strength and Performance: The hollow frame design accommodates larger bearings, significantly improving rotational performance and providing stable support for the oversized pulley. It also reduces the impact of external object intrusion, ensuring consistent operation while adding a clean, sleek aesthetic.

Precision-Built Ceramic Bearings: Unlike press-fit pulley designs, Tripeak’s injection-molded pulley fully encases its ceramic bearing. This creates a perfect zero-tolerance fit, reducing wear and delivering quieter, more efficient operation while extending the lifespan of both the pulley and the chain.

Durable Composite Body: Crafted from a composite material, the pulley body is built for wear resistance and long-term performance. Compared to traditional aluminum pulleys, it offers better durability and reduced noise, making it an investment in smoother, quieter rides.

Narrow-Wide Tooth Engagement: With its narrow-wide tooth design, the pulley ensures secure chain engagement for improved stability. This feature minimizes chain drops and further enhances efficiency, making it a perfect upgrade for Shimano GRX 2X riders who demand reliability and performance.

Tripeak’s patented asymmetric pulley frame allows for the increase in pulley size to 18 teeth while fitting seamlessly into the original derailleur cage with minimal modification.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.