Any issues related to the delicate bores and wall thickness issues of the N54/N55 can be nearly eliminated, and in most cases fixed forever with our sleeving service

This is a very delicate and time consuming job, many machine and race shops mistakenly think they can do it successfully but we have seen issues repeatedly.
You just need to supply us  a bare block along with the main bearing caps and we’ll do the rest!

Benefites of Sleeving:
*Improved Cooling
*Improved block integral strength
*Increased Horsepower output potential
*Superior oil and compression control
*Superior cylinder sealing and ring wear

• A piston set to the required specs from CP pistons is $1,199.95  Includes their premium rings, pins, and locks.

If you need a quote on us assembling the lower end or gapping the piston rings, please let us know. We are a full engine and machine shop and have built many high power and reliable all aluminum BMW engines for both race and street customers alike.