The CyclingCeramic OSPW Race for Shimano 105 R7100, 7150 Di2, and 105 11-speed drivetrains is engineered to deliver enhanced drivetrain efficiency, smoother shifting, and improved overall performance for modern road cycling. Designed as a performance upgrade, the oversized pulley wheel system optimizes chain flow, resulting in reduced friction and more efficient power transfer across varied riding conditions.
At the core of the system is a precision-engineered oversized pulley configuration featuring a 14-tooth upper and 19-tooth lower pulley. This design reduces chain articulation and mechanical resistance, allowing for smoother gear transitions and consistent drivetrain performance during both high-speed efforts and endurance rides.
Constructed with CNC-machined aluminium pulley wheels combined with a carbon UD rear plate and aluminium front plate, the OSPW Race delivers a balanced combination of lightweight performance and structural durability. The aerodynamic profile further enhances drivetrain efficiency, contributing to improved speed and responsiveness on the road.
Equipped with hand-built ceramic bearings, the system significantly reduces friction within the drivetrain, ensuring smooth and efficient shifting performance. Independent testing has demonstrated exceptionally low friction levels, helping riders achieve measurable gains in efficiency and precision.
Designed specifically for Shimano 105 Di2 12-speed and 105 11-speed drivetrains, the OSPW Race integrates seamlessly into modern road bike setups. Its compatibility across multiple generations of Shimano 105 systems makes it a versatile upgrade for riders seeking improved drivetrain performance.
Installation is straightforward, and for optimal performance, it is recommended to use a new chain with an additional 2 to 4 links to ensure proper setup and chain length.
At Mastermind Bicycle Studio, the official distributor of CyclingCeramic in India, the OSPW Race for Shimano 105 is available for riders seeking a refined drivetrain upgrade with improved efficiency and reliability.
Specifications
• Pulley Wheels: 14T upper / 19T lower
• Pulley Material: CNC-machined aluminium
• Cage Material: Carbon UD with aluminium structure
• Bearings: Hand-built ceramic bearings
• Compatibility: Shimano 105 Di2 (R7100/7150) & Shimano 105 11-speed (R7000)
• Cassette Compatibility: 11–36T
• Speed: 11 & 12-speed
• Spring Tension: 2 settings
• Weight: 110g
Price
₹ 35,990
Mastermind Bicycle Studio also supports authorised dealers across India. Riders are encouraged to connect with their nearest dealer for consultation, installation guidance, and product availability.
