Darton Sleeves 3.970" Bore Cylinder Sleeve 6.000" Height 4.254" OD 0.142" Wall - Steel Gauge Components The RZ-88C Closed Cockpit Gloss

The RZ-88C Closed Cockpit Gloss Carbon version includes Dual Density Air Intergration System maximum venting on the chin and top with 360 degree air channeling built into the helmet EPS and shell

1/8 in NPT Male Thread

600 lb/in Spring Rate

Ratcheting Mechanism

please refer to part # CB010

Darton Sleeves 3.970" Bore Cylinder Sleeve 6.000" Height 4.254" OD 0.142" Wall - Steel Gauge Components The RZ-88C Closed Cockpit GlossProduct Description: Cylinder Sleeve 3. 970 in Bore 6. 000 in Height 4. 254 in OD 0. 142 in Wall Steel Small Block Chevy Sold Individually Darton is a manufacture of engine block sleeves. Using specialized ductile iron, their sleeves fit a variety of engine makes and sizes.