Engines and Components› Camshafts and Valvetrain
Manley Performance
Manley 90-99 Mazda Miata 1.8L (BP056) DOHC 16 Exhaust 29mm Stainless Race Master Valves
SKU: M004 11103-8
Advanced — 4+ hours
Description
Constructed from durable XH-426 Stainless Steel, these valves feature chrome stems and hard tips for enhanced longevity and wear resistance. They are designed with swirl-polished under-head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
Fitment
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Specifications
| Brand | Manley Performance |
| Part Number | M004 11103-8 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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