Mahle Rings Perf Grey Iron BT-10UF 4.0551in x 2.0MM .178in RW Chrome Ring Set (48 Qty Bulk Pack)

If you're rebuilding an engine and need a bulk pack of high-performance piston rings, this Mahle BT-10UF set is a solid option. These rings are built for engines with a 4.0551-inch bore, featuring a 2.0mm top ring and a .178-inch oil ring. The chrome facing on the top ring is a notable detail, as it helps with wear resistance and sealing against the cylinder wall, especially in demanding applications where heat and friction are high.

Mahle is a well-known name in engine components, and this set is made from grey iron, which offers good durability and heat dissipation. The bulk 48-quantity pack means you'll have plenty on hand for multiple engine builds or for a shop that frequently works on engines of this size. Proper ring installation is key for good compression and oil control, so make sure to follow the manufacturer's guidelines when fitting these into your pistons.