My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Supertech Performance HIVN-1021D High-Performance Engine Valve

(2002-2009 Honda Civic; 2003-2014 Honda Accord; 2002-2012 Honda CR-V; 2003-2011 Honda Element; 2012-2014 Honda Crosstour; 2002-2006 Acura RSX + 1 more model)

Manufacturer

Picture for manufacturer Supertech Performance

Part Number

HIVN-1021D
9 reviews
Sale Price

$20.11

Estimated ship date Friday, November 20

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Supertech Performance brings over 20 years of manufacturing expertise to the HIVN-1021D engine valve, engineered in close collaboration with professional engine builders to deliver exceptional flow rate, durability, and precision quality. Each valve is built to meet the rigorous demands of high-performance and race applications.

Construction & Materials:

  • One-Piece Forged Stainless Steel — Primarily manufactured using EV8 (21-4N) alloy for both intake and exhaust applications, offering superior strength and long-term reliability over multi-piece designs.
  • Inconel 751 Nickel Base Alloy — Available for extreme-heat exhaust valve applications, including turbocharged and supercharged engines where standard stainless alloys may be insufficient.

Protective Coatings:

  • Chrome Coating — A proven surface treatment widely used in performance valve manufacturing for enhanced hardness and wear resistance.
  • Black Nitride Treatment — A surface hardening process that produces a smoother finish than chrome, reducing friction between the valve stem and guide for improved longevity and performance.

Important Ordering Information:

  • Supertech valves are sold individually (per valve).
  • Order the exact quantity needed for your application — for example, a 16-valve engine requires a quantity of 16.

Supertech Performance valves are a trusted choice for engine builders seeking OEM-quality replacements or performance upgrades in street, track, and competition builds.

Products specifications

Fits

2002-2009 Honda Civic; 2003-2014 Honda Accord; 2002-2012 Honda CR-V; 2003-2011 Honda Element; 2012-2014 Honda Crosstour; 2002-2006 Acura RSX; 2004-2014 Acura TSX

Head Dia

35.50mm (+0.5)

Length

108.85mm

Material

Black Nitrided

Stem Dia

5.48mm

I bought an Exedy Organic Clutch at the best price I could find. Shipping was also prompt. Legit dealer, good business.

Super pricing, fast shipments, good selection they have it all.

Great deals at unbeatable prices!

Product was as described, shipping was fast, and communication was excellent. Plus I saved $$. Thanks Autoplicity! I'll be a repeat buyer and referral source.

Found a Thule Vertex bike hitch on here for $50 cheaper than amazon. Extremely fast shipping. Definitely recommend purchasing from here.

Great prices, reasonable shipping costs. Shipped within 3 days of order. Didn't receive discount for valid coupon code (25OffShipping). No response to 2 emails. No indication of expected delivery date. Lots of unknowns but you can't beat the pricing.

Great price on the mufflers! Hopefully, the start of a beautiful relationship.

SO HAPPY! I have to admit, I was hesitant because I had never heard of autoplicity and there wasn't item a picture up for the Thule T2 rack I bought, but wow am I happy. Autopliicity had it for $100 less than other sites and the shipper was Amazon prime fast!!! Definitely a happy customer!!!!

I ordered a Thule 9002 Raceway Bike Carrier on Sunday, April 8 and received the product by Fedex on Wednesday, April 11 with just regular shipping. That is fast service. And the price was $43 cheaper than any other site on the internet (including shipping). I haven't had a chance to use the bike carrier yet but it appears to be new and as advertised with no issues as of this writing. I would definitely recommend this retailer for your next purchase. Order Number: 9111

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy