Kelford Cams Extreme Racing Valve Springs BMW B58 / S58 3.0L

Engineered for high‑boost, high‑horsepower builds. JDY’s Extreme Racing Valve Spring Kit is purpose‑built for BMW B58 and S58 3.0L inline‑6 engines. Featuring progressively wound PACALOY beehive valve springs with titanium retainers, this kit delivers the strength, precision, and reliability demanded by extreme racing applications.

🔧 Key Features

• High‑Energy PACALOY Beehive Springs Progressively wound for superior durability and stability under extreme boost and RPM.

• Titanium Retainers Lightweight yet strong, reducing valve train mass for improved performance.

• Precision Machined Spring Seat Maximizes seat pressure for high‑boost builds, ensuring consistent valve control.

• Designed for Kelford Stage 2 & Stage 3 Cams Optimized for engines producing 1000+ HP.

• Performance Specs

  • 105 lb seat pressure @ 35mm installed height

  • 210 lb @ 10.8mm valve lift

  • Coil bind height: 23.6mm

Push your BMW B58/S58 engine beyond factory limits with JDY’s Extreme Racing Valve Spring Kit — built for maximum boost, horsepower, and reliability.

If your item is in stock and the order is placed before 3 PM, it will ship the same day. Products that include ceramic coating are shipped the following business day. If the product or color you’re looking for is out of stock, you can join the waitlist by clicking the “Email When Available” button. We’ll notify you as soon as it’s back and provide an estimated restock time.

Custom Orders
For custom requests, please email us directly. We’ll review your order and provide an estimated delivery time based on the required manufacturing process.

Damaged, Incorrect, or Missing Items
If your order arrives damaged, incorrect, or missing parts, simply email us a photo along with your order number. We’ll arrange a refund or exchange right away. Contact us at info@ttmengineering.se and we’ll make it right.

Returns & Satisfaction
Unused and uninstalled products are eligible for a refund, exchange, or store credit. Unfortunately, once a product has been used or installed, we cannot accept returns or offer refunds. If you decide you don’t like a product after installation, it will not qualify for return.

Restocking Fee
A restocking fee of 20% of the original purchase price may apply to returned products. This fee covers the costs of processing and restocking. Please refer to our Policies Page for full details on exchanges and returns.