Manley · 11271-8
Part #: 11271-8
UPC: 807298039244
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Description: Manley Valve - Exh., S/D, 42.6mm / 1.675 in. Max Head Diameter; Max Head Diameter: 42.6mm / 1.675in. - Use Custom Order Form or call to order
Description:
Description
Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.
Features & benefits
- Hard Tips and Hardened Grooves
- No Need for Inserted Tips or Wear Caps
- Tight Tolerance Delivery: Strict quality control measures enable the delivery of valves within tight tolerances, meeting the highest precision standards.
- Manley Performance can custom build vavles for any possible combination with a short lead time. Please call your sales representative.
Information
25° X 1/2 .065 M .100 S 20° DISH X .200 RIM .800" REDUCTION
Specifications
- GTIN
- 00807298039244
- Weight
- 4 lb
- Height
- 2.5 in
- Length
- 11.75 in
- Width
- 6.75 in
- EO
- Offroad
- Life cycle
- Available to Order
- Warehouse brand code
- BBPB
- AAIA brand code
- BBPB
Attributes
- California Proposition 65
- WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- Engine Type
- ICE
- Head Diameter
- 1.675 MAX
- Industry
- Automotive
- Margin Width
- Custom
- Maximum Head Diameter
- 42.6mm / 1.675
- Maximum Valve Length
- 134.6mm / 5.300
- O/A Length
- 5.300 MAX
- Out of Stock Message
- Call for Availability
- Product Market
- Domestic
- Product Type
- Engine Exhaust Valve
- Seat Width
- Custom
- Stem Diameter
- 0.3125
- Tip Length
- CUSTOM
- Title
- Manley Valve - Exhaust, Valve-GEN II .3125 STEM
- Top of Head
- Custom
- Type
- Exhaust
- Underhead Angle
- 25.00
- Underhead Radius
- 1/2
- Valve Quantity
- 8
- Valve Stem Diameter
- 0.3125
- Valve Type
- Exhaust
Fitment status
This product is universal and will fit your application.
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