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Shimano Tourney RD-TX800

Shimano Tourney RD-TX800

$35.00 CAD

Reliable Indexing. Rugged Build.

The Shimano RD-TX800 is built to handle the rigors of daily use. Whether you are navigating city potholes or light gravel paths, the TX800 delivers consistent, predictable gear changes. Its Double Servo-Pylon technology keeps the upper pulley at a constant distance from each cog, resulting in faster, more accurate shifts across the entire cassette.

Why the RD-TX800 is Smart Value:

  • Double Servo-Pylon Technology: Ensures the derailleur moves in an optimized path, keeping the guide pulley close to the cogs for crisp, "snap-to" shifting.

  • Large 13-Tooth Pulleys: The oversized 13T tension and guide pulleys reduce friction and chain wrap stress, resulting in a quieter drivetrain and longer pulley life.

  • Wide-Range Compatibility: Designed to handle "MegaRange" cassettes with up to a 34T low gear, giving you the mechanical advantage needed to conquer steep neighborhood hills.

  • Durable Alloy & Steel Construction: Features a robust body designed to withstand the occasional bump or tip-over, making it ideal for commuters and younger riders.

  • Smooth, Light Action: Engineered with a spring tension that provides easy shifting at the lever—perfect for those using twist shifters or entry-level trigger shifters.

  • Universal 7/8-Speed Fit: Works flawlessly with all Shimano SIS (Shimano Index System) 7Speed and 8Speed drivetrains.

Technical Specifications:

  • Speeds: 7 / 8Speed

  • Max Low Sprocket: 34T

  • Min Low Sprocket: 28T

  • Top Sprocket: 11T

  • Total Capacity: 43T

  • Mounting: Standard Hanger Mount (B-Axle)

  • Weight: Robust and Reliable (approx. 315g)


The Alegro Perspective: In the shop, we call the TX800 the "Old Faithful." When a customer comes in with a bent or sluggish entry-level derailleur, this is our go-to replacement. It is remarkably easy to tune and stays in adjustment much better than unbranded alternatives. If you want to restore that "new bike" feel to your 7 or 8Speed rig without spending more than the bike is worth, the TX800 is the most cost-effective performance boost you can buy.

Crisp Shifting. Affordable Durability. Restore your Ride with Shimano.

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