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- ERT SP-1 Super pump spring kit is the answer to low oil pump pressure
- Kit includes 3 color coated springs
- Each spring applies more pressure on the relief valve plunger
- Output pressure is blue 20PSI, yellow 24PSI and red 28PSI
- Fits:
- Evolution Big Twin 1984-1991
- Shovelhead 1966-1984
- Replaces OEM: 26207-83
- Made in USA