Bring on the Boost! BoostLine Rods for Subaru EJ20 and EJ25 Engines

BoostLine rods for Subaru EJ20 and EJ25 engines takes the power and boost potential of an already potent platform to the next level!

BoostLine connecting rods for highly boosted Subaru EJ20 and EJ25 engines were launched a little over three years ago. These unique, lightweight rods can handle upwards of 1,000-horsepower in 4-cylinder applications and are a substantially more durable alternative to aluminum drag racing rods. 

Subaru EJ20/EJ25

Note: Block clearancing required above 81mm stroke

“We wanted to develop a rod that was capable of handling the power that a new generation of builders are extracting from their engines with better tuning and fuel, and longer-lasting components,” says Nickolaus DiBlasi, BoostLine’s Director of Product Management. “BoostLine rods are for the majority of people who want to drive their cars on the street and can’t get away with the short life of an aluminum rod. We created a durable, high-performance steel rod that’s different from what everyone else has out there.”

BoostLine Subaru EJ20 and EJ25 rods are designed from the ground up for boost.

BoostLine’s 4340 chromoly steel rods feature a patented, F1-inspired three-pocket design. Three large voids are milled out of the rod to create a distinctive look that reduces weight and creates a strong, truss-like system to resist bending.

“We haven’t failed one yet,” adds DiBlasi, “and they should be good for many rebuilds. We want this to be the last new rod you have to buy before you go to an aluminum rod and become a full-blown drag racing car.”

The EJ block from DiBlasi’s own Subaru project was used in the development of the first BoostLine rods. To create a perfect fit, BoostLine always begins with a 3D laser-scan of the block. The crankshaft and different stroke iterations are superimposed onto the digital block model to build a design based on a wide envelope. For the relatively big-bore EJ for example, the short standard stroke is 75mm, but with a BoostLine rod, block clearancing is only required for strokes above 81mm.

Read more »