All series of Girdle are specifically designed and CNC machined from AL6061 T6 aluminum by S90. While the OEM main Girdle holds only 3 points. S90 feels that it is provides inadequate support for the performance enthusiasts.
S90 main Girdle comes with 5 Point Main Girdel for maximum support and balancing at hight-end output by reading vibration. Thus, improving throughout torque and horsepower.
Easy bolt-on 5 Point Main Girdle introduces balances, support and vibration reduction for your performance needs. Made from high quality AL6061 T6 billet aluminium, these Gridle are CNC machined to precision. S90 Girdle allows the use of OEM bolts as aftermarket bolts.
AL6061 T6 billet aluminum provides fairly high strength, good workability and high resistance to corrosion, excellent for throttle body
Enhanced block support, Reduced high end vibration, Improved torque and horsepower
* For B20B at Max. Crank Stroke of 89mm, the use of original parts is alright.