TACX Tapered Thru Axle Insert S0051
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The Tacx Tapered Thru Axle Insert (Model S0051) is a critical component for cyclists using direct-drive smart trainers who need to adapt a 12 mm thru-axle bike. This driven-side insert adds the proper taper and interface to mount a cassette and ensure smooth operation inside the trainer. As an OEM Garmin/Tacx part, the S0051 insert matches factory tolerances and performance standards. Its press-fit installation is simple and clean—no modifications or special tools needed.
Designed for compatibility across a range of smart trainers including NEO and Flux variants, it secures alignment and ensures that your drivetrain behaves as intended under power. With its hardened alloy construction, the insert resists wear from repeated use and maintains tight tolerance performance over time. Whether you’re converting a new bike or replacing a worn insert, the S0051 is a precision component for maintaining trainer integrity. Additional accesoirer for the T2835 adapter when the bolt is too long. Possible impacted bicycles: Specialized Tarmac, Specialized Roubaix; Giant TCR Advanced Disc.
FEATURES
Tapered design – Engineered to convert a 12 mm thru-axle interface into the correct taper for Tacx direct-drive trainer compatibility.
Drive-side orientation – Meant for the drive-side position ensuring proper alignment with cassette and trainer body.
Genuine OEM part – Original Garmin / Tacx factory insert, not aftermarket, for precise fit and performance.
Press-fit installation – Installs easily with no special tools required, ensuring clean and accurate seating.
Multi-trainer applicability – Compatible with Tacx NEO, Flux S, Flux 2, and other direct-drive smart trainers needing this insert.
Durable construction – Made from hardened alloy to withstand torque and repeated usage in trainer setups.
SPECIFICATIONS
Model / Part Number: S0051
Compatibility: Tacx direct-drive smart trainers (NEO, Flux S, Flux 2, etc.)
Axle Standard: 12 mm thru-axle (drive-side insert)
Installation Type: Press-fit (no special tools required)
Material: Hardened alloy / steel
Function: Interface between thru-axle and cassette mount on trainer
Finish / Surface: Machined, corrosion-resistant
Durability: Made to handle torque loads and repeated training use
