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Proform Engine Valve Spring Check Spring - BB1903

RIMAC Calibrated Test Spring
Manufacturer: Proform
Manufacturer part number: BB1903
$47.56
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When accuracy is the difference between winning and losing, there's one test spring to trust when setting up your vehicle...the RIMAC calibrated test spring. Approximate documented range is from 10 to 190 lbs. Data sheet included. Super accurate and individually tested on an Instron SF1240 testing machine.

Note: RIMAC Calibrated Test Spring

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Country of Origin US
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