FA20 DIT – Street Mod, Short Block

CJMSTREET Mod FA20 DIT SHORT BLOCK

High Performance FA20 Foundation for Street Application

The CJM Track Mod FA20 DIT Shortblock is engineered for drivers who want OEM-like drivability with substantially improved strength and reliability. By retaining brand-new OEM FA20 DIT case halves and upgrading the rotating assembly with premium forged CJM-spec components, this package delivers exceptional durability without compromising smooth daily performance.

Forged Internals: Built for Real-World Street Performance

CJM x Wiseco Forged Pistons
CJM-spec Street Mod piston is designed and tailored for FA20 DIT combustion chamber and DI heat management
Forged 2618 aluminum construction for excellent strength and thermal stability
Improved detonation resistanceideal for pump-gas, flex-fuel, or upgraded-turbo setups
Reduces the risk of common FA20 piston failures, including ringland issues and heat-related damage

CJM x Callies Compstar Forged Connecting Rods
Custom CJM-spec forged rods manufactured by Compstar
High-strength forged steel with optimized weight for responsive street manners and fast-spooling turbo performance
ARP2000 rod bolts provide exceptional clamping force and long-term durability
Together, the CJM x Wiseco pistons and CJM x Compstar rods transform the stock FA20 DIT bottom end into a far more robust and reliable foundation for street-focused performance builds.

Brand-New OEM Case Halves Machined & Assembled In-House
Every build begins with brand-new Subaru OEM FA20 DIT case halves, ensuring perfect geometry with zero prior wear or distortion
All machining, clearancing, and assembly are performed 100% in-house by the CJM engine team
Guarantees consistent tolerances, precise fitment, and maximum long-term reliability