TOKEN SHURIKEN Oversized Pulley Set For Shimano DURA-ACE / ULTEGRA TK1739S2

The Shuriken oversized pulley system was engineered for maximum performance and designed to enhance drivetrain efficiency on any bike. The larger pulley diameter enables the system to rotate at lower RPMs, reducing the chain's articulation angle and subsequently minimizing drivetrain friction. The TBT bearings within the pulleys are filled with specially developed light grease to keep drag low and minimize resistance. The combination of a carbon fiber cage and hardened steel/dura-aluminum hardware establishes a lightweight yet robust foundation for the system.

The pulleys themselves are crafted from dura-aluminum and coated with PVD (Physical Vapor Deposition) for enduring low friction and a clean aesthetic. A purpose-specific tooth profile ensures precise shifting and exceptionally smooth operation. Upgrading to the Shuriken oversized pulley system not only allows you to increase drivetrain capacity on a short-cage derailleur but also enables the use of a larger cassette for an expanded gear range. Embrace a more effortless and enduring ride with the Shuriken oversized pulley system.

What is Conti-Wave?

Conti-Wave machining reduces chain noise by minimizing the contact surface against the chain. The chain enters the rear derailleur at various angles. The Conti-Wave tooth profile, designed for the lower pulley, ensures smooth pulley-and-chain engagement regardless of the gear position. The continuous chamfered form on the teeth's edge reduces the contact area between the teeth and chain inner plates by 82.5%, further increasing efficiency while perfectly guiding the chain.

SPECIFICATIONS:

Bearings: TBT

Pulley Wheel: Upper 13T, lower 19T

Derailleur Brands: SHIMANO 12 Speed

RD Compatibility: R9250, R8150

Drivetrain capacity: 16T (chainring) + 23T (cassette)

Lowest (largest) cog: 34T

Weight: 59g / set

Plate Material: Matte 3K carbon

Pulley Material: Aluminium with titanium coating