Yea, the bottom end on these B5's is amazing! Before I bought the B5 I was running a newer version OS V-SPEC (2060 pipe)and a sirio CL7B-STI (2013 pipe)and I liked them a lot but I had to run 1.1 springs in my d8t truggy and I still was not happy with the bottom end, so ended up running my WERKS B3 which has a lot of bottom and it was great! Lcked a little on the top but it was better on the bottom than the vspec and the sirio. Then I got a B5 and WOW!!! The bottom end is insane! I even took the 1.1 springs out and put in 1.0's becasue it had SOOO much bottom! And the top end is awesome.. This to me is the best truggy engine I have ever run. Cant wait till the new WERKS pipes come in so I can pick up a couple!!!!