Revised Short Block Specs!!--

RSB-SS25 Street Spec Short Block Subaru 2.5L $2700
Upgrade to Cosworth pistons +$500

Custom built to exacting tolerances. Street Spec short blocks are designed for applications up to 600bhp. Features semi-closed deck block, 4130 steel H-beam conrods, Wiseco forged pistons, and uprated main and rod bearings. Factory crankshaft .


RSB-RS25 Race Spec Short Block Subaru 2.5L $5500
RSB-RS20 Race Spec Short Block Subaru 2.0L $5500
Optional K1 Billet Crankshaft +$1200

Race Spec short blocks are for competition applications. Blocks are fitted with 3-dimensional AEBS T-Sleeves to maintain cylinder bore dimensional stability under extreme pressures and temperatures. Built with Cosworth forged pistons, uprated bearings with additional oil clearance, Cosworth H-beam conrods, factory crank dynamically balanced to 1/2 gram.


RSB-XS25 X Spec Short Block Subaru 2.5L $8500
RSB-XS26 X Spec Short Block Subaru 2.6L $8500
RSB-XS20 X Spec Short Block Subaru 2.0L $8500
RSB-XS22 X Spec Short Block Subaru 2.2L $8500


X-treme Spec short blocks take the race spec short block one step further with the addition of a Cosworth lightweight billet crankshaft and several displacement options.


RSB-S20N Group N Short Block (latest STi spec.) $5995

Group N shortblocks are fully blueprinted and balanced. Utilizing specially selected components and absolute attention to detail with every component. Special Order!

RST-0105 EJ207 Crankshaft Ver.8/9 $642.72

Designed for high rpm reliability. Factory EJ207 crankshaft features cross-drilled mains for constant oil supply to heavily loaded rod bearings as well as tufftriding (a form of nitriding) to increase surface hardness.

Wiseco piston kits are forged from high strength 2618 alloy and then precisely machined on CNC centers. Pin bores are honed to a precise tolerance and each piston is fully deburred. Chrome moly pins and high grade ring sets are included with every kit. Subaru piston kits also feature skirt coatings for maximum performance.

Application Guide

ORDER REQUESTS:
sales@rallispec.com

TECHNICAL QUESTIONS:
tech@rallispec.com

GENERAL INQUIRIES:
rallispec@rallispec.com