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Street Spec Value Shortblock

Designed for the low noise and long life essential for a daily driven street application while easily handling increased power outputs and weekend track use. The Street Spec Value short blocks features a high quality Mahle 4032 forged piston set. Standard compression 2.5L short block pistons are custom made to RalliSpec specifications and use the same ring package as Cosworth pistons. Manley H-beam 4340 rods help keep the cost down and are suitable for applications up to 450whp. All RalliSpec Street Spec shortblocks are built to exacting tolerances by a technician with 13 years of experience building Subaru engines for high end motorsport applications. A detailed build sheet is supplied with each short block.

Click here for shortblock comparison chart.

Usually ships in 4 to 5 days.

Manufacturer: RalliSpec


  • Subaru
Part No. Description Displacement Price Ea. Add to Cart
RSB-SS25V RalliSpec Street Spec Value Shortblock 8.2:1 2.5L $3150.00
RSB-SS25VHC RalliSpec Street Spec Value Shortblock 9.4:1(1) 2.5L $3150.00
RSB-SS20V RalliSpec Street Spec Value Shortblock 8.5:1(1) 2.0L $3100.00

(1) High compression and 2.0L short blocks use Mahle off-the-shelf piston kits with Mahle rings.