Cyl MID Sleeve GM LS (Set 8) 4.110in ID Bore

The Darton Sleeves Cyl MID Sleeve GM LS (Set of 8) with a 4.110-inch ID bore is designed for serious LS engine builders and high-performance machine shops. These cylinder sleeves are engineered for builders who require precision overbore capability and enhanced durability, allowing for the refreshing of tired or damaged blocks without complete replacement.

The mid-wall design of these sleeves optimally positions the wall thickness between the block deck and pan rails, maximizing cooling jacket efficiency while maintaining the structural integrity needed for high-RPM applications. The 4.110-inch bore specification accommodates aggressive overbore applications beyond stock limits, enabling displacement increases and larger piston packages essential for turbo and supercharger builds.

LS platform enthusiasts, from bracket racers to serious competitors, rely on Darton sleeves to unlock additional cubic inches and structural reliability when pushing beyond factory specifications. These sleeves are ideal for overbore and stroker builds, providing the necessary strength for forced induction applications.