SUBARU

Precision Billet Engine Block Assembly for all high-output WRX and STi derivatives. Available in both EJ25 and EJ20 configurations

 
 
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WREJBB

A world first for the serious Subaru tuners is the WREJBB Billet Engine block. Designed to bolt directly in place of a factory block WREJBB is machined from 6000 Series Billet Aluminum to provide massive strength gains over the factory block, and well beyond other aftermarket (Closed Deck) modified blocks. WREJBB can support more than 1500whp without the traditional Subaru engine problems of leaking decks, case separation, and tunnel distortion. Rock solid and strong WREJBB lifts Subaru tuning to the next level. WREJBB achieves all of this without compromising factory cooling capability or requiring the use of special ancillary bolt-on components. In other words WREJBB can be used in a daily driven vehicle, and still offer > 1500hp power capability.

WREJBB also features unique Willall design touches such as 4-bolt mains for vastly improved bottom end rigidity as well as rolled threads for up to 20x greater fastener strength and even radiused oil and cooling galleries for maximum flow without cavitation

 
 

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