About this item

• 【DUAL DIRECT‑HANGER MOUNT DESIGN FOR 6/7‑SPEED 18/21‑SPEED BIKES】Rear derailleur fits both direct mount and hanger mount frames; PLEASE VERIFY YOUR ORIGINAL DERAILLEUR MOUNTING STYLE BEFORE PURCHASE to avoid order mismatch and unnecessary returns
• 【STURDY ALUMINUM‑ALLOY HOUSING FOR STABLE SHIFTING PERFORMANCE】Heavy‑duty aluminum alloy main body improves structural rigidity, delivers smooth, steady gear transitions and reliable performance for daily commuting, mountain trail riding and long‑distance cycling
• 【MULTI‑POINT PRECISION ADJUSTMENT FOR ACCURATE GEAR SWITCHING】Multi‑position fine‑tuning structure supports precise limit‑screw calibration; helps you dial in crisp, responsive shifting and reduces gear‑slipping for comfortable riding experience
• 【EASY INSTALLATION & LOW‑MAINTENANCE REPLACEMENT ACCESSORY】User‑friendly structure enables fast installation and simple routine maintenance; ideal cost‑effective spare part for broken or worn‑out original rear derailleur replacement
• 【BROAD COMPATIBILITY FOR MULTIPLE BIKE TYPES】Works perfectly with 18‑speed and 21‑speed drivetrains; widely applicable for mountain bikes, road bikes and folding bicycles for daily repair and component upgrade

Features:
1. Model: RD-TZ31A black rear derailleur, compatible with 6/7 speed 18/21 speed, suitable for mountain bikes and road bikes.
2. Material: Forged with high hardness aluminum alloy.The hollow weight-reduction design is adopted,and the speed change is more stable.
3. Design: Accurate gears provide light and stable shift performance and it can be adjusted slightly in multiple places to
ensure accurate speed change performance.
4. Usage: Suitable for mountain bikes, station wagons, folding bikes etc. It will giveyou a better riding experience
5. Options: Two types for different mount style, direct mount or hanger mount. Please check the mount type of the original part before ordering.

Specifications:
Material: Aluminum alloy
Color: Black
Size: (Approx)(LxWxH)14x8x10cm/5.5x3.1x3.9inch
Speed:6/7 speed, 18/21 speed
Type: Direct Mount, Hanger Mount

Package Included:
1 x Bicycle Rear Derailleur

Note:
1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 0.5-2 cm differences due to manual measurement.