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Manley Performance Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves
Manley Performance Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves
Manley Performance Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves
Manley Performance Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves
Manley Performance Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves
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Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves

MAN11102-8
807298055817
Valves
4 Units In Stock - Ships Next Business Day
$ 263.93 $ 211.14
$ 211.14

SKU: 11102-8 | UPC: 807298055817

Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves

Manley Race Master valves deliver reliable performance for Mazda Miata 1.8L BP DOHC engines in bracket drag and oval track racing. This set of 8 intake valves fits 1994-2005 Miata Base and LS models with precise 33mm heads and 7.95mm stems. Built to handle high RPM operation up to 8000 with stainless steel durability and flow enhancements.

Key Features

  • Stainless Steel Forging: One-piece construction resists fatigue and maintains seal under extreme heat and pressure
  • 33mm Intake Head: Matches OEM dimensions for drop-in fit while increasing airflow through precise machining
  • Swirl Polished Backs: Reduces drag and turbulence for improved cylinder filling and power output
  • Undercut Stems: Lightens valve weight to 49 grams each minimizing reciprocating mass and valve float
  • 7.95mm Stem Diameter: Ensures compatibility with stock guides and retainers for straightforward valvetrain upgrades

Product Notes

  • Inspect valve seats and guides before installation to ensure proper clearance
  • Lubricate stems with assembly lube during install for extended life
  • Ships in protective foam-lined box measuring 8x6x2 inches

Installation Notes

  • Professional installation recommended.
  • Valve lash adjustment required after install using factory specs of 0.007-0.009 inch intake
  • Compatible with stock springs up to 8000 RPM or pair with dual springs for higher revs

This Part Fits

Year Make Model Submodel
1994-1997 Mazda Miata Base
1999-2005 Mazda Miata Base
2000-2005 Mazda Miata LS

Why Choose Manley?

  • Proven in NHRA and SCCA racing with decades of valvetrain expertise
  • Hand-inspected for tolerances tighter than OEM standards
  • CNC machined in USA for consistent geometry and longevity

Frequently Asked Questions

  • Q: Will these fit 1990-1993 Miata 1.6L models?
    A: No these are for 1.8L BP DOHC only starting 1994. Use Manley 11100-8 for 1.6L.
  • Q: What material are the valves made from?
    A: High-strength 21-4N stainless steel forged in one piece for heat resistance and strength.
  • Q: Do these require special retainers or keepers?
    A: No uses stock Mazda hardware. Warranty covers defects with proof of proper install.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Foam-lined box 8x6x2 inches
  • Weight: 1.2 lbs

Request For Information

Have questions about Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Intake 33mm Stainless Race Master Valves? Fill out the form below and we'll get back to you by the next business day.
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