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Manley Titanium Valves 11921-8 Valve, Exhaust, Titanium, 1.900 in. Diameter, .342 in. Stem, 6.450 in. Length, Universal, Set of 8

SKU: MAN11921-8

Valves

Manley Titanium Valves 11921-8 Valve, Exhaust, Titanium, 1.900 in. Diameter, .342 in. Stem, 6.450 in. Length, Universal, Set of 8

SKU: MAN11921-8

Valves
A$2,922.05
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Valve - Exhaust

Manley Titanium Valves are expertly designed to reduce valvetrain weight, improve efficiency, and excel in high-RPM applications. Lightweight yet incredibly strong, they enhance throttle response, power, and durability, making them the choice of performance enthusiasts and professional engine builders. Each valve features a one-piece forged titanium construction with superior grain flow to eliminate weak points and ensure long-term strength. State-of-the-art CNC machining and precision grinding deliver tight tolerances and consistent sealing for optimal engine performance. Crafted from premium titanium alloys, Manley valves achieve the perfect balance of hardness, ductility, and fatigue resistance under extreme temperatures. Every valve undergoes rigorous quality control and final inspection, guaranteeing unmatched reliability, precision, and consistency in the most demanding racing conditions. When performance matters, Manley Titanium Valves power the winners.

Additional Information

Head Diameter: 1.900 in. - Stem Diameter: 0.3415 in. - O/A : 6.450 in. - Set of 8

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-11-09 03:42:00

Features

  • Built for extreme RPM and aggressive cams
  • CNC machined for precision
  • Lightweight titanium reduces valvetrain mass and boosts efficiency
  • One-piece forged for strength
  • Premium alloys ensure durability
  • Rigorously inspected for reliability

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:32:53

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Manley Performance, Manley
StreetFX SKU man11921-8
SFX Item ID 4934056
Accounting SKU man-11921-8
Manufacturer SKU 11921-8
Manufacturer UPC 807298059310
Alternative References 11921-8, MAN-11921-8

Valve, Exhaust, Titanium, 1.900 in. Diameter, .342 in. Stem, 6.450 in. Length, Universal, Set of 8

Manley titanium valves feature forged one-piece construction with grain flow, not a head welded to a stem. These jewel-like valves are machined in state-of-the-art CNC turning centers and valve stem grinders to exacting tolerances. Manley utilizes the finest titanium alloys for both the intakes and exhausts, providing the best balance of mechanical properties, hardness, ductility, and fatigue strength at the given temperatures. All Manley titanium valves must pass their rigorous final inspection process, and strict quality control enables them to deliver parts within tight tolerance. Custom valves can be delivered within a very reasonable turnaround time. Seat coatings are also available on certain shelf stock part numbers, as well as on custom valves.

Product Attributes
BrandManley
Manufacturer's Part Number11921-8
Part TypeValves
Product LineManley Titanium Valves
UPC807298059310
Valve PositionExhaust
Exhaust Valve Head Diameter (in.)1.900 in.
Exhaust Valve Head Diameter (mm)48.260mm
Exhaust Valve Stem Diameter (in.)0.342 in.
Exhaust Valve Stem Diameter (mm)8.69mm
Exhaust Overall Valve Length (in.)6.450 in.
Exhaust Overall Valve Length (mm)163.830mm
Undercut StemNo
Swirl-PolishedYes
Valve Tip Length (in.)0.250 in.
Valve Tip Length (mm)6.350mm
Valve MaterialTitanium
Lock Groove Quantity1-groove
Lock Groove StyleConventional
Approximate Weight (g)116
Valve Seat Width (in.)0.075 in.
QuantitySold as a set of 8.

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