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Manley 11656-4 Race Master Intake Valve Kit 40.5mm Head, 0.3130" Stem

(2015-2017 Ford Mustang)

Manufacturer

Part Number

11656-4
Sale Price

$94.34

2 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Product Details

Built to withstand the punishment of bracket, drag, and oval track racing, these valves are engineered for high-performance engines operating under 8,000 RPM. Each valve features a 40.5mm (1.594") head diameter, a 0.3130" stem diameter, and an overall length of 3.976", with a 5-degree dish head shape optimized for combustion efficiency in race applications.

Key Features:

  • Stainless Steel Construction: Valves are machined from high-quality stainless steel for superior durability and long service life
  • Chrome Stems and Hard Tips: Chrome-treated stems and hardened tips provide enhanced wear resistance under high-cycle racing conditions
  • Swirl Polished Underhead Area: The underhead area is swirl polished and the combustion face is fully machined to optimize airflow and combustion efficiency
  • Race Master (Straight Stem) Profile: Straight-stem Race Master shape suited to the specific demands of racing engine builds
  • Recommended for Alcohol Engines: Suitable for use as intake valves in alcohol-fueled racing engine applications
  • Head Diameter: 40.50mm
  • Stem Diameter: 0.3130 in.
  • Overall Length: 3.976 in.
  • Tip Length: 0.130 in.
  • Margin/Seat Width: 0.075 in.
  • Head Shape: 5-Degree Dish
  • Underhead Angle: 10.00°, Underhead Radius: 11/32 in.
  • Quantity: Kit includes 4 valves

These Manley Race Series intake valves deliver the precision machining and premium materials that competitive racers demand. Designed for Volkswagen Rabbit engines, they are a direct fit for performance rebuilds where reliability at high RPM and under extreme cylinder pressures is non-negotiable.

Products specifications

Fits

2015-2017 Ford Mustang

Valve Material

Stainless steel

Make

VOLKSWAGEN

Valve Head Diameter

40.50

Engine Type

ICE

Product Type

Engine Intake Valve Kit

Top of Head

5 Degree Dish

Valve Type

Intake

Valve Series

Race Series

Margin Width

0.075

Underhead Angle

10.00

Underhead Radius

11/32

Valve Head Shape

5 Degree Dish

Valve Sub-Series

Race Master

Valve Quantity

4

Engine

Rabbit

Head Diameter

40.50

O/A Length

3.976

Seat Width

0.075

Stem Diameter

0.3130

Tip Length

0.130

Title

Manley Valve - Intake, Valve-VW RAB R/M 40.5mm

Valve Stem Diameter

0.3130

Valve Length

3.976

Engine Valve Quantity

4

Valve Tip Length

0.130

great

product just as described, received in 3 days

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Just to put more info about the product being purchased

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