Oliver LS Series I-Beam Connecting Rod - 6.125 in Long - GM LS-Series (Set of 8) MA01BLFBZ it means that these are

it means that these are not suitable for open-top car racing or for karting

The baffle maintains the oil at the oil pump pick-up preventing loss of engine oil pressure during off-road excursions as well as under hard acceleration

Coan bracket and Pro tree transmissions are offered for all popular GM

Slayer Series street carburetors are designed with many of the same innovations and features that are built into all QFT™ race-winning carburetors

Oliver LS Series I-Beam Connecting Rod - 6.125 in Long - GM LS-Series (Set of 8) MA01BLFBZ it means that these areProduct Description: Connecting Rod LS Series I Beam 6. 125 in Long Bushed 7 16 in Cap Screws ARPL19 Bolt Forged Steel GM LS Series Set of 8 Oliver Racing Parts draws from more than a century of manufacturing expertise to create what has been called the ultimate I beam connecting rod. Using CAD with refinements provided by FEA (Finite Element Analysis), Oliver has created a new benchmark in quality. Oliver billet and forged steel rods are widely used