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$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

Summit Racing SpeedCard - learn how to get 10% back - Get Details!

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2,000+ Results Found For "proportioning"

Individual Parts

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47-59 CHVY/GMC PROP VALVE KIT

Part Number: HCT-S0269

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Estimated Ship Date: Jan 22, 2026 if ordered today

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Estimated Ship Date: Jan 22, 2026 if ordered today

VALVE KIT-ELEK TRACT CONT BRK PRESS MOD

Part Number: ADO-42863277

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Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

BRACKET, VALVE, 2023-2026

Part Number: MOP-68573535AA

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Brake Lines, Replacement, Master Cylinder to Proportioning Valve, Short Line, Long Line, Stainless Steel, Pair

Part Number: SUM-760255-SS

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Brake Lines, Replacement, Master Cylinder to Proportioning Valve, Short Line, Long Line, Steel, Pair

Part Number: SUM-760255

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Wiring Pigtail, Proportioning Valve, Female. Black, Each

Part Number: SUM-760159

5.0 out of 5 stars ( 4 )

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Wiring Pigtail, Proportioning Valve, 1 Pin, Female, Black, Each

Part Number: RSD-PVW71

4.6 out of 5 stars ( 5 )

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Wiring Connector, Proportioning Valve Warning Light Pigtail, Each

Part Number: CLP-SP015130

3.83 out of 5 stars ( 6 )

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Brake Line, Short Line, Stainless Steel, Natural, 3/8-24 in. Male Inverted Flare Ends, Each

Part Number: WIL-190-12972

5.0 out of 5 stars ( 4 )

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Trailer Brake Control, Quest Proportional, LED, Plastic, Black, Universal, Each

Part Number: HSK-31899

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

Brake Line, Long Line, Stainless Steel, Natural, 3/8-24 in. Male Inverted Flare Ends, Each

Part Number: WIL-190-14060

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Brake Line, Long Line, Stainless Steel, Natural, 3/8-24 in. Male Inverted Flare Ends, Each

Part Number: WIL-190-12973

5.0 out of 5 stars ( 2 )

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Brake Line, Short Line, Stainless Steel, Natural, 3/8-24 in. Male Inverted Flare Ends, Each

Part Number: WIL-190-14245

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Brake Line, Long Line, Stainless Steel, Natural, 3/8-24 in. Male Inverted Flare Ends, Each

Part Number: WIL-190-14246

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Brass Seat, 3/16 in. Inverted Flare Seat, Each

Part Number: BAE-5517B

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DECAL, FRONT, REMOTE BRAKE BIAS

Part Number: WIL-400-4979

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Cylinder Head, Pro-Port Raw Ford FE, Bare, Aluminum, 45cc Combustion Chamber, NHRA Machined Logo, Each

Part Number: EDL-61857

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Cylinder Heads, Victor LS-R Pro-Port, Aluminum, Bare, 25cc Chamber, Hot Isostatic Pressing Processed for Optimum Strength, Chevrolet, 7.0L LS, Each

Part Number: EDL-770469

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Cylinder Head, Pro-Port Raw, Bare, Aluminum, Oval Intake Port, Round Exhaust Port, Chevy, Big Block, Each

Part Number: EDL-614669

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Cylinder Head, Big Victor Spread-Port 14 Degree CNC, Bare, Aluminum, Chevy, Big Block, Each

Part Number: EDL-618369

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Estimated Ship Date: Jan 9, 2026 if ordered today

Cylinder Head, Victor DR-17 Pro-Port Raw, Bare, Aluminum, Natural, Chevy, Big Block, Each

Part Number: EDL-615469

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Estimated Ship Date: Dec 31, 2025 if ordered today

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Estimated Ship Date: Dec 31, 2025 if ordered today

Cylinder Head, Glidden Victor SC-1, Pro-Port, Aluminum, Bare, 20cc Chamber, Raw, Ford, 289, 302, 351W, Each

Part Number: EDL-770769

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Estimated Ship Date: Dec 31, 2025 if ordered today

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Estimated Ship Date: Dec 31, 2025 if ordered today

Cylinder Head, Big Victor 3, 11 Degree, Pro-Port, HIP, Aluminum, Natural, Angle Plug Style, Chevy, Big Block, Each

Part Number: EDL-613669

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Master Cylinder, Tandem, Aluminum, Black, 1.125 in. Bore, Proportioning Valve, Fluid Tubes, Kit

Part Number: WIL-261-13270-BK

4.75 out of 5 stars ( 32 )

Estimated Ship Date: Today

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Master Cylinder, Tandem, Aluminum, Black, 1 in. Bore, Proportioning Valve, Kit

Part Number: WIL-261-13269-BK

4.59 out of 5 stars ( 22 )

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