My experience with Trek 3700 is bad ( I have Merida & Firefox as well) including that of my friend who is using Trek 4300. With a run of about 4000KM the 3700 rim has cracked at the joint. Whereas 4300 the rim crack along break pad surface. These bikes are priced higher without any merit and should not cost more than 10K(Trek 3700). For reasons of economy Europeans, Americans & Japanese are sitting in China and manufacturing these products. But the Chinese raw material quality is suspect. I have been to China a dozen times & have imported Mech items reached to conclusions.
I have no confidence on these bikes anymore doing downhill at high (55KM/Hr) speeds.
Hello Mr. Vinoo,
We really regret for these mishappenings.
You are requested to provide us the purchasing details of both of these bikes and mail us images of the defective portion.
We are assuming that you are using your bike for rough & tough kind of biking & you have done so many mountain biking trips too with your Trek 3700. ( refer : http://cyclists.in/photo/photo/listForContributor?screenName=0n42ua... ).