A good choice for anyone replacing a worn front derailleur on a 3x7 or 3x8 mountain bike with a compatible clamp-band frame and triple chainring setup.
The Shimano TOURNEY TX800 is a top-swing front derailleur for triple chainrings and 7- or 8-speed drivetrains. It uses a clamp-band mount and is designed for mountain-bike applications, making it a useful replacement for worn or damaged front shifting hardware on an existing bike.
The top-swing layout places the moving pivot section higher, helping the derailleur stay rigid while shifting. In practice, that supports quick, light front shifts between the three chainrings. Shimano’s HYPERDRIVE system combines the front derailleur with compatible SG-X chainrings and an HG chain to improve chain control, particularly when the trail or road gets rough.
This version uses dual-pull cable routing and suits chainlines of 47.5 or 50 mm, with a stated total capacity of 20T and compatibility with top chainrings up to 42T or 48T. Before ordering, check your frame’s clamp diameter, chainstay angle and chainring combination so the derailleur matches your bike’s existing setup.
3x7 and 3x8 compatible
Designed for triple-chainring drivetrains using seven- or eight-speed rear gearing.
Top-swing design
The higher pivot position and shorter link are intended to improve rigidity for quick, light front shifting.
HYPERDRIVE shifting
Works with compatible chainrings and HG chain components to improve chain control during front shifts.
Dual-pull cable routing
Supports either applicable cable-pull direction, giving more flexibility when matching the derailleur to your frame and shifter setup.
Clamp-band mounting
A practical band-on installation style for frames with a compatible 28.6–34.9 mm seat-tube diameter.
Broad triple-chainring range
Supports top chainrings up to 42T or 48T, with 20T total capacity for a wide range of touring and recreational mountain-bike gearing.
Two chainline options
Suitable for 47.5 or 50 mm chainlines when the rest of the drivetrain and frame dimensions match.
General
Mounting
Colour
TOP SWING
The moving pivot section sits higher and uses a shorter link to increase rigidity, helping deliver quick, light front shifting.
HYPERDRIVE
SG-X chainrings, a Wide Link front derailleur and an HG chain work together to improve chain control for precise and reliable front shifting, particularly during demanding off-road riding.
HG Cassette
Positioned shift ramps and tooth profiles improve chain control during shifting for fast, responsive indexed gear changes.
Shimano is a Japanese component brand founded in 1921 in Sakai, Osaka. The company began with bicycle component manufacturing and has grown into a global business focused on bicycle components, fishing tackle and rowing equipment, while keeping its headquarters in Sakai.
In cycling, Shimano is best known for building complete component ecosystems that span road, mountain, gravel, commuting and e-bike use. Its range covers drivetrains, brakes, wheels, pedals, shoes and related parts, and the brand has had a long presence in Australia through a local business established in Sydney in 1992.
