Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

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.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

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.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-10-14 10:03:31

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

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11921-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Titanium Valves
Product Attributes - UPC
807298059310
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.900 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
48.260mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.342 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
8.69mm
Product Attributes - Exhaust Overall Valve Length (in.)
6.450 in.
Product Attributes - Exhaust Overall Valve Length (mm)
163.830mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.250 in.
Product Attributes - Valve Tip Length (mm)
6.350mm
Product Attributes - Valve Material
Titanium
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
116
Product Attributes - Valve Seat Width (in.)
0.075 in.
Product Attributes - Quantity
Sold as a set of 8.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11921-8
SFX Item ID 4934056
Supplier Item Code 4934056
Manufacturer SKU 11921-8
Manufacturer UPC 807298059310

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakePONTIAC
    Engine TypeV8
    Valve Installed LengthStock
    Cylinder Head TypeBig Chief

Loading compatibility information...

Keep shopping

More from Manley Performance