Race Flo Intake Valves - Set of 8 by Manley Performance
The Pro Flo version, identified as Race Master and Race Flo valves, is manufactured with XH-426 material for exhaust and NK-842 material for intake. This series of valves is intended for bracket, drag, and oval track racers operating at 8000 rpm or less. Generally, titanium valves are required for higher engine speeds. Engine builders who have successfully used EV-8 (21-4N) alloy valves will find that this series of Manley valves offers a superior product at a most attractive price. The ultimate tensile strength tables on this and the following pages demonstrate that the Manley Race series is equal to the best offered by competitors.
Features
- Head Diameter: 33.5mm
- Stem Diameter: 5.48mm / .2157"
- O/A Length: 102.40mm
- Tip Length: 2.5mm
- Underhead Angle/Radius: Pro Flo 22° x 5/16°
- Margin: 0.050"
- Seat Width: 0.075"
- Top: 17° Dish
- Chrome stems and hard tips
- Swirl polished and fully machined
- NK-842 Stainless Intake Material
Benefits
- Ideal for drag racing and oval track racer operation below 8000 rpm - titanium valves are typically required for higher engine speeds
- Equal to the best offered by competitors
- Up to 40% increase in flow on small-port OE-style cylinder heads
- Proven performance gains on the flow bench
Please note: The images provided are generic and may not be an exact representation of the product you will receive.
Applications
- 1992-2001 Acura Integra GS-R
- 1999-2000 Honda Civic Si
- 1994-1997 Honda Civic del Sol VTEC
What's in the box?
- 8 - Valves
Warranty
- Due to the nature of their intended use, Manley products are sold without warranty.
Before Ordering
〇 Regarding Import Taxes
At Shaftoya Shopping Site, we pay any import taxes incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
Our entire product database is based on North American vehicles (USDM). Please confirm compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look it up for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our home page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. There may be confusing expressions, so please contact us if you have any questions before ordering.
○ Regarding Shipping
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, there are rare cases where the automatically calculated shipping cost differs significantly from the actual cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please order with enough time to spare. If you are in a hurry, please contact us to check delivery times in advance. Note that all products are transported by air; they are not shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
All products we handle are basically designed and manufactured outside of Japan. Please note that they are not compliant with "Japanese Vehicle Inspection (Shaken) standards," and we cannot provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, the packaging or the product itself may sustain shipping damage. We will handle returns, refunds, or replacements for damaged items, defective products, or incorrect items only if you contact us within 7 days of receipt. Please understand that for products sold through us, all warranty-related support will be handled "exclusively through us." We do not coordinate with other domestic Japanese companies or agencies for warranty support.