Engine Valve Spring CheckerRIMAC IS BACK! Since the 1920's RIMAC has been the industry standard when it comes to valve spring testing tools. Rimac's famous flagship "Big Blue" spring tester is now available once again! Since 1929, Rimac has been a leader in the design and manufacturing of precision engine building tools. Hardcore engine builders and enthusiasts have considered Rimac Spring Testers the gold standard of the industry for nearly 60 years, and still covet them as is

your 2008 and newer Challenger needs to perform

bolt-in installation and ride height adjustability

Each product works in both premix or injection systems

BMR recommends a 10-inch spring for spring rates 150lb/in or less

Premium high-grade steel

Delivering an aggressive muscle car sound both inside and outside the vehicle

The discs in this assembly are built using high quality friction materials

Features on-car adjustability for additional clearance and centering aftermarket rear ends

along with Blue Anodized Titanium socket head cap screws and our 360 degree rotating clamp system

2003-08 4Runner front and rear differentials

Transmission mounts are used to keep the transmission in place and absorb energy from it

Not suitable for use with Oil/Fuel