Race Flo Intake Valves - Set of 8 by Manley Performance
The Pro Flo version, identified as Race Master and Race Flo valves, are manufactured from 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, higher engine speeds require titanium valves. Any engine builder who has successfully used EV-8 alloy (21-4N) valves will find this series of Manley valves to be an excellent product at a very attractive price. The ultimate tensile strength charts on this and the following pages demonstrate that the Manley Race series is equal to the best offered by any competitor.
Features
- Head Diameter: 33.0mm
- Stem Diameter: 5.48mm / .2157"
- O/A Length: 102.40mm
- Tip Length: 2.5mm
- Underhead Angle/Radius: Pro Flo 22° x 5/16°
- Margin: .050"
- Seat Width: .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 under 8000 rpm - titanium valves are typically required for higher engine speeds
- Equal to the best that competitors have to offer
- Up to 40% increase in flow on small port OE-style cylinder heads
- Proven performance gains on the flow bench
Please note: The provided image is 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
- Manley products are sold without warranty due to the nature of their intended use.
Before Ordering
〇 Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax 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), so please check the compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether the listed product is compatible with your vehicle, please feel free to contact us. Our support team will look into it 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 top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of settlement. An estimate for shipping costs is automatically calculated when you enter your shipping address on the checkout page. For large items such as body parts, the automatic shipping calculation may rarely differ significantly from the actual shipping cost. In such cases, we will contact you individually via email.
Basically, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow plenty of time when ordering. If you are in a hurry, please contact us in advance to confirm the delivery date. Note that all products are transported by air. They are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please be aware that all products we handle are designed and manufactured outside of Japan. They do not comply with the "Japanese Vehicle Inspection System," and we cannot provide strength calculation documents or similar paperwork for the Japanese vehicle 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, there may be damage to packaging boxes or products during delivery. Please understand that we will only provide returns, refunds, or replacement exchanges for products with delivery damage, defective items, or items different from what was ordered if you contact us within 7 days of receipt. Please note that for products sold through our company, warranty-related support will be provided "only through us." We do not provide support through other companies or distributors located within Japan.