"Your trusted DCT/8HP conversion shop - By enthusiasts, for enthusiasts"
HOLMEN PERFORMANCE RESOURCES
Explore our extensive selection of components for automatic transmission conversions. We're proud pioneers in this field, backed by extensive research and development, and we've engineered a proven solution that sets the industry standard for excellence. We provide fully customized 8HP and DCT packages, delivering power up to 1800HP/Nm, along with chassis kits tailored for a variety of JDM vehicles.
HPR Parts Available in the US
Selected HPR products are available through Seems Legit Garage, our official U.S. distributor. This gives U.S. customers an easier way to order with lower shipping costs and no import duties.
NEW RELEASE - NOW AVAILABLE FOR PURCHASE - LIMITED STOCK
8HP BELLHOUSING ADAPTER KITS
Pioneered solutions by HPR
Choose the original approach. We develop and engineer innovative solutions with a focus on performance, quality, and competitive pricing.
"We dont follow, we lead"
Nissan Skyline GTR
Discover a World of Options to Transform Your Car
Premium Accessories for DCT and 8HP transmissions
Nissan RB Products
NEW RELEASE
HPR 8HP Low Profile Breather Cap
The HPR 8HP Low Profile Breather Cap replaces the OEM breather with a compact solution designed to maximize transmission tunnel clearance.
Unlike our previous Breather Mod Kit, this version retains the factory breather position, with no drilling, hose routing, or relocation required.
What sets the HPR design apart is the downward-facing vent opening. The breather follows the edge of the transmission, positioning the opening underneath to help protect it from dirt and debris.
CNC machined from 6061 aluminum and finished in black anodized coating for durability and corrosion resistance.
Features
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Direct OEM breather replacement
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Maximizes tunnel clearance
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No drilling or relocation required
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Downward-facing vent helps protect against debris
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CNC machined 6061 aluminum
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Black anodized finish
Note: Due to minor transmission tolerances, the cap may fit slightly loose on some applications. Use Loctite or RTV if needed.
Customer voices
The Proof of Our Quality
HPR's responsiveness and dedication to provide their customers with the products and service we require was nothing short of spectacular. It is very obvious when delaing with Helge/HPR that they care very much about their costumers and are extremley passionate about what they do.
- Mitch, USA
"I stumbled upon HPR Tuning online, and that marked the beginning of a remarkable journey. My interaction with Helge, a wonderful member of the HPR team, was truly insightful. Their products are not only exceptional but also backed by an invaluable depth of knowledge. They managed the seemingly impossible task of fitting a BMW gearbox into an R32GTR flawlessly, a feat that was considered implausible. HPR's engineering prowess is truly outstanding." - Gary from the United Kingdom"
- Gary, United Kingdom
"Outstanding communication, top-notch service, excellent products, and lightning-fast shipping. Keep up the fantastic work, folks!"
- Gabriele from Italy
"I'm delighted with our communication. While there was an initial hiccup with my oil adapter not matching my transmission, the HPR team quickly found a straightforward solution. They offered reasonable options, and I'm extremely satisfied with the resolution. I've now put 2,000km on my swap using the HPR oil cooler adapter and PCD cover plate, and I'm looking forward to future business with them.
-George, Hill Preformance Bimmers
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