Shuriken Oversized pulley System

We all know that rear derailleur is the key component which differentiates drivetrain performance the most, and can be the difference between a new best or disappointment. The Token Shuriken Oversized Pulley is designed to break geometry norms in favor of a new era in drivetrain efficiency. It's even lighter than a stock long cage with plastic pulleys, sound interesting?

Why Oversized?

The Shuriken oversized pulley system improves the drivetrain efficiency regardless of speed, power, and riding condition by lessening chain articulation and therefore friction. In short, the oversized pulley wheels lessen the amount the chain moves laterally. It also dramatically improves the shifting precision and durability, thanks to the oversized wheels spinning slower.

Conti-Wave technology purpose-specific tooth profile that can be found on all Shuriken pulleys. The TBT ceramic bearing in the faster spinning top pulley adds smoothness to where really matters.

Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra
Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra
Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra
Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra
Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra

Shuriken Oversize Pulley for Shimano Dura-Ace, Ultegra

Regular price$379.00
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The Shuriken oversized pulley system was engineered for maximum performance and designed to increase the efficiency of the drivetrain on any bike. The larger diameter of the pulley allows the oversized pulley system to rotate at lower RPM and reduces the articulation angle of the chain, lowering drivetrain friction.

The TBT bearings inside the pulleys are filled with specially developed light grease to keep drag low to minimize drag. The carbon fiber cage and hardened steel / dura-aluminum hardware creates a light and strong foundation for the system. The pulleys are made of dura-aluminum and PVD (Physical Vapor Deposition) coated for long-lasting low friction and clean aesthetics. A purpose-specified tooth profile ensures crisp shifting and super smooth running. Upgrading to the Shuriken oversized pulley system allows you to add drivetrain capacity to a short cage derailleur, enables running a larger cassette with expanded gear range. Ride easier and longer with the Shuriken oversized pulley system.

Compatible drivetrains include: Shimano R9100, Shimano R9150 (Di2), R8000, R8050 (Di2).

Drivetrain Compatibility

Common questions

The Shuriken pulley system can be installed by an experienced mechanic. Be sure to use high-quality tools – such as the T15 (Torx) tool for Shimano versions.

Although it needs two extra chain links on average, we recommend keeping the original chain length first. Once the pulley is installed try all gears carefully and see if it is needed to add extra chain links or use a completely new chain.

We all know that a bigger pulley has lower drag as it spins slower. However, the top pulley has structural limits. Derailleur design varies – the largest top pulley that each derailleur can accommodate are different, and it’s not worth trade-off shifting performance for that marginal gain. Pulley size is just one of the factors – bearing technology, pulley tooth profile, and surface treatment all matter. All Shuriken models are designed not only for efficiency but also for best shifting performance and easy adjustment.

Chain noise comes from the bottom pulley most of the time as the chain enters it at various angles. The 19T bottom pulley of Shuriken is designed for super-smooth running and is as quiet as a plastic pulley.

No. With a little adjustment, the Shuriken oversized pulley system shifts perfectly every time.

We recommend disassembling the Shuriken oversized pulley system, opening the seal, and regreasing the bearings every 2,000km. The maintenance interval should be shorter when riding in rainy or muddy conditions frequently.

No. Current Shimano road derailleurs are structurally different from older generations, and the derailleur cage is not interchangeable.

No, Ultegra RX is more MTB-oriented from the design point of view, a lot of parts are different from road models. In fact, the Ultegra RX could be considered "pre-GRX" despite it being named Ultegra.