Wilwood Adjustable Proportioning Valve – next-generation brake pressure control
A compact, forged-aluminum body houses Wilwood’s latest engineering, giving you faster, more accurate bias tuning than ever before. The precise, fine-thread adjuster lets you vary line pressure from 100 to 1000 PSI and, when needed, slash it by up to 57%—the highest reduction range on the market.
Key benefits
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Pin-point adjustability – the linear knob makes it easy to dial-in the exact rear-brake pressure your setup demands.
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Featherweight build – just 5.2 oz minimizes unsprung weight near calipers and hoses.
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Forged housing – motorsport-grade strength against vibration and high pressure.
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Plug-and-play plumbing – dual 1/8-27 NPT ports plus two included 3/8-24 inverted-flare fittings match most 3/16" hard lines.
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Universal mounting – twin Ø 0.25" ears (1.00" spacing) bolt straight to firewall, frame rail or handbrake bracket.
Typical uses
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Fine-tuning balance after a big-brake kit or rotor size change.
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Drift, time-attack and rally cars where front-to-rear bias shifts with tyres and surface grip.
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Hydraulic hand-brake systems needing quick rear-line pressure drop
Vehicle Compatibility
| Brand | Model | Generation / Chassis | Engine |
|---|---|---|---|
| Universal | - | - | - |
WILWOOD
Wilwood Proportioning Valve - Knob Adjust 1/8 NPT
Tags: Braking System\Proportioning Valve,
This product has universal fitment.