ZTTO bicycle mountain bike frame gear tail hook, bicycle parts mountain bike road bike alloy rear derailleur race

Brand ZTTO
Material Aluminum
common problem:
Question: I use a certain speed rear derailleur, a certain type of transmission system. What tail hook should be used?
Answer: The tail hook lifting lug is an accessory of the frame (except for the hook rear derailleur), and has nothing to do with the gear shift and rear derailleur used.

Question: My car is a XX brand frame, which tail hook should I use?
A: It is impossible for the customer service to know what tail hooks are used for all frames except for some popular frames. Please also send pictures to the customer service to confirm (the pictures found on the Internet are the same as the tail hooks for your car. Because some brands may have different tail hooks for different batches)

Question: How strong is your tail hook here? Is there any steel?
Answer: Most of the lugs are made of 6061 aluminum alloy. Why not use steel? When you accidentally crash the car, you may hit the transmission and cause deformation to affect the transmission function. The rear hook is made of aluminum alloy to allow a certain deformation to protect the transmission from damage. In the case of serious bumps, the rear hook can be broken, and it can be replaced with a new one afterwards, thereby reducing the cost of frame maintenance. The strength of steel is too high to provide protection.

Question: Can the model you recommend can definitely be used? What if the tail hook I bought can't be installed?
Answer: As long as the pictures you take are clear and accurate, we can hardly miss the recommended model number based on our experience. Of course, if there are any uncertain factors, we will tell the truth. We will never induce customers to place orders for the sake of selling goods. You decide whether to place an order. We only promise if the tail hook posted is consistent with the online photo.

Question: Why is the quality of your tail hook so bad? Why it broke after just being used. Is there any warranty
Answer: Don't blame the poor quality of the tail hooks, you can go to the specialty store to see if they sell the same. The function of the tail hook is the same as that of a fuse. If there is a problem with the speed change, the tail hook must be broken, broken, or stuck. It is especially reminded that the last tail hook was suddenly broken during riding, and must be checked. Do not rule out the problem of gear shifting. Sooner or later, the tail hook will break again. If it breaks, you must also check whether it is smooth after replacing the new tail hook. The tail hook is a wearing part and has no warranty. Almost all brand vehicles and frame manufacturers are not covered by the warranty.

The tail hook is broken for no reason. It is not because of a problem with gear shifting. Under normal circumstances, the lifting lugs are not affected by much force. The tail hook is caused by forging. It is relatively fragile. Once the force is too large, it must be deformed and broken. . If you think what we are saying is not credible, you can search the Internet for the answer. I have repeatedly reiterated that the tail hook has the same function as a fuse. Did you use a fuse and it was blown due to a short circuit? Instead of checking why it blows, you scold that the quality of the fuse is not good?