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Ovate wire ‘PACALOY’ Beehive spring wound in USA by PAC
The W25 Dual AVCS Castings are for 2008-2018 STI
Seasoned FA20 BRZ/FRS Case Halves (S20) Closed Deck
Uses stock alignment pins without modifying case or heads
ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load
Outfront Motorsports V4 Racer Shortblock Single Disc Clutches Ovate wire ‘PACALOY’ Beehive springThis closed deck block design has been proven to withstand extreme boost levels resulting in high cylinder pressures without the worry of cracking a sleeve. The billet material that reinforces the combustion area has been further optimized with our V4 closed deck block in the known problem areas making it a far superior product to any sleeved block. With a closed deck block the stock sleeves are still in place eliminating all risk of dropping sleeves