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Heavy duty 3/4" thick version of the standard version of the 40-175 torsion arm
precision 4135 chromoly heat treated and plated body
Hyper Racing # 141-400
Use to check the bore in a 600cc engine without removing the head
ECU Performance Data Tune rear end Heavy duty 3/4" thick versionHyper Racing # 603 753 This part number is for a data tune after the purchase of the 603 752 initial Performance Tune Flash. With recent advances in ECU flashing technology as well as data logging of speed density and Alpha N vs RPM capabilities, master engine tuners Mike Dicely and Nash Ely bring you the most advanced and best performing ECU performance tunes in the industry. Together they have logged countless hours, tuning hundreds of engines,
