Replacement Front Derailleur
My neighbors kid has a Wallmart Mongoose mountain bike and came to me with a badly bent front derailleur. I straighten, adjusted and got him back on the road. But on it's best day this component was a piece of garbage. I told him next time I order parts I'd see if I could get him a replacement. I'm looking at an Altus 7/8 speed to replace what ever the heck is on his bike right now. Should 7/8 speed spacing be the same across brands? His is top pull. I'll check the tube diameter before I order. Anything else I should be watching out for?