TACX E-Thru Trainer Axles for Classic Trainers

The TACX E-Thru Adapter X-12 (Model T1709) is your solution for converting a 142 mm thru-axle rear wheel into a trainer-compatible setup. This adapter fits securely into your bike’s rear dropout, aligning perfectly with Tacx trainers built for the X-12 standard. Made from a durable alloy, the adapter is designed to stand up to repeated use and maintain precise alignment. The high-precision machining ensures minimal lateral movement, translating your pedaling force accurately into the trainer. Its thread-based design means you can swap it on and off in seconds—no wheel changes needed.

FEATURES

142 mm thru-axle support – Designed specifically for bikes with 142 mm rear spacing, converting them for use on Tacx trainers.

X-12 compatibility – Built to the X-12 standard, enabling seamless integration with Tacx smart trainers.

Rigid alloy build – Crafted from high-strength alloy for durability, precision, and stability under load.

Easy install / removal – Simple threading mechanism lets you switch between trainer and outdoor setups quickly.

Tight tolerance fit – Machined to exacting tolerances to minimize play and ensure accurate power transfer.

Durable coating – Protective finish helps resist corrosion from sweat, moisture, and indoor training environments.

SPECIFICATIONS

Model: T1709

Axle Standard: 142 mm thru-axle > X-12 adapter

Material: High-strength alloy

Weight: Approx. 70 g

Finish: Corrosion-resistant coating

Thread Type: Tacx trainer dropout compatible

Tolerance: Precision machined for minimal play

Use Case: Rear wheel adapter for indoor trainer compatibility

Color: Black / anodized finish

Compatibility: Designed primarily for Tacx trainer systems with X-12 interface