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Crower Jumbo valve stem keepers are designed with a 10° taper (twice the strength of the conventional 7° taper)
Reprogram at any time to accommodate changes in gear ratio or wheel and tire combination with a simple push button
even if they are a 28-spline spool
11/32" Valve Lash Caps - high grade Chromoly SteelHeat treated for added strength
Nissan Silvia 180SX & 200SX SR20DET86
9" Nodular Iron Case STN1905 Product:3.0625" With Chrome-Moly Caps Crower Jumbo valve stem keepers9" Nodular Iron Case3. 0625" With Chrome Moly Caps STN1905 N1905 Has your stock 9" case or aftermarket big cap" case with 5 8" cap bolts failed? The Strange 9" nodular iron case is the solution hopefully before the failure costs you a lot of money. Strange nodular cases are machined from D 4512 nodular iron which is 8% stronger than the nodular which is found in OEM cases. The 8% material strength is only a small portion of the total strength increase
