Skunk2 Alpha Series Subaru EJ25 Connecting Rods

Alpha Series Rods are forged from select 4340 chromoly steel and feature an H-beam design, resulting in the ultimate strength-to-weight ratio. 4340 chromoly is one of the strongest materials available, however, not all 4340 chromoly is the same. As such, Skunk2 relies on extensive material testing and works closely with its foundry to produce high-quality rods at an affordable price. Comprehensive heat-treating, tempering, and shot-peening processes together ensure that each Alpha Series Rod remains consistent and strong. Finally, each rod is magna-fluxed to ensure integrity and that each process has been completed thoroughly and according to Skunk2’s rigid specifications. Skunk2’s engineers spent nearly three years developing and testing its H-beam rod design. The results are one of the strongest beam configurations available, capable of handling more than 900 hp. Engineers made use of FEA (Finite Element Analysis) to determine high-stress points and implemented features to reduce wear and increase strength. Skunk2’s straight design distributes stress across a larger area when compared to tapered rods, providing additional support where necessary. Alpha Series Rods are manufactured from two-piece forgings, resulting in optimal grain orientation along the rod cap for increased strength. By orienting the metal’s grain in the direction of stress along the rod cap, perpendicular to the stress exerted along the beam, strength is significantly increased. Skunk2’s two-piece forgings provide a precision-tight fit between the rod’s cap and its beam without resorting to the brittle materials required by other processes. Alpha Series Rods also feature dual oil passages at their pin ends, providing additional lubrication and cooling, which leads to an even stronger, more durable rod. Unlike other designs, Skunk2’s carefully positioned, offset oil passages help deliver lubrication around the entire wrist pin, during each phase of the engine cycle.
Alpha Series Connecting Rod Set; 130.59mm Length; 502 Grams; Rated to 900HP; H-Beam; Incl. 3/8 ARP2000 Bolts/Lube; 4340 Chromoly Steel; Set of 4;

• Dual-Pin Oil Passages For Increased Lubrication And Strength
• Fatter H-beam Design Without Drastic Weight Increase
• Pin End Compatible w/Most Pistons w/o Machining
• Shot-Peened For Reduced Fatigue
• 3/8-in. ARP2000/Skunk2 Bolts
• Bronze Wrist Pin Bushings
• Magna-flux Inspected
• Balanced +/- 1 Gram
• Weight 535 Grams
• Length 130.59mm
• Heat Treated
• FEA Analyzed

Fitment:
Subaru Baja Turbo 2004 to 2006
Subaru Forester Sports 2.5 XT 2008
Subaru Forester XT 2004 to 2005
Subaru Forester XT 2009
Subaru Forester XT Limited 2006 to 2010
Subaru Forester XT Premium 2005
Subaru Forester XT Premium 2010 to 2013
Subaru Forester XT Touring 2011 to 2013
Subaru Impreza 2.5 GT 2009 to 2010
Subaru Impreza WRX 2006 to 2014
Subaru Impreza WRX Limited 2006 to 2007
Subaru Impreza WRX Limited 2010 to 2014
Subaru Impreza WRX Premium 2009 to 2014
Subaru Impreza WRX TR 2006 to 2007
Subaru Legacy 2.5GT 2010 to 2012
Subaru Legacy GT 2005 to 2006
Subaru Legacy GT Limited 2005
Subaru Legacy GT Limited 2007 to 2009
Subaru Legacy GT spec.B 2006 to 2009
Subaru Outback XT 2005 to 2006
Subaru Outback XT Limited 2005 to 2009