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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
Supertech BMW S63 V8 Conical Spring Kit - Rate 83lbs (Ex) 80lbs (In)Upgrade your BMW S63 V8 engine with the Supertech Conical Valve Spring Kit, meticulously designed for high performance applications. Engineered to provide optimal valve control, this kit features conical springs that enhance durability and precision under demanding conditions. With an outside spring rate of 83lbs and an inside spring rate of 80lbs, these springs offer a robust balance of performance and reliability. Ideal for enthusiasts and tuners
Upgrade your BMW S63 V8 engine with the Supertech Conical Valve Spring Kit, meticulously designed for high-performance applications. Engineered to provide optimal valve control, this kit features conical springs that enhance durability and precision under demanding conditions. With an outside spring rate of 83lbs and an inside spring rate of 80lbs, these springs offer a robust balance of performance and reliability.Ideal for enthusiasts and tuners looking to increase engine responsiveness and efficiency, these valve springs ensure valve stability at high RPMs, reducing the risk of valve float. Manufactured by Supertech, a trusted brand in engine components, the kit fits seamlessly into your valve train system and is crafted from premium materials for lasting performance.
Whether you are building a custom hot rod, upgrading your V8 motor, or enhancing your kit car, this spring kit will provide the essential strength and support your engine demands. The product SKU is sptSPRK-BMS63B and the MPN is SPRK-BMS63B, categorized under engine components specifically for valve springs and retainers. Enjoy competitive pricing, reliable shipping across Europe, and expert support at Tuningsupply, your go-to source for tuning parts since 2020.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 4
Boys Navy suit
Color: Navy Blue, Size: 6 Years
Boys navy suit
Fits well.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Beautiful
Color: Champagne, Size: 7 Years
I bought it to my son to play piano, and I really loved it, beautiful, good quality. 👏🏻
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Perfect Suit Great Quality and Value
Color: Lavender Purple, Size: 6 Years, Color: Lavender Purple, Size: 6 Years
I love at how nice this boys suit turned out. The slim fit gives it a stylish, elegant look, and it makes my nephew look so sharp and grown up. Fit true to size.
The material feels good quality, not thin or cheap, and it’s definitely nicer than I expected for the price. I really like that it comes as a full set, which made things so much easier instead of having to buy down extra pieces. Love the tie and the vest, so cute.
He wore it for a special event and got so many compliments, people couldn’t believe how handsome he looked. It stayed looking neat all day, and he was able to move around comfortably. I could easily see him wearing this again for weddings, church, holidays, or even school pictures.
Overall, it’s a great buy if you want your little guy to look dressed up without spending a fortune. Beautiful boys suit, stylish and elegant, great value and quality. Wash inside out, and air dry.
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Reviewed in the United States on August 26, 2025
★★★★★ 5
One of the best suits out there!!
Color: Christmas Green, Size: 8 Years
I am not one who write reviews, so the fact that I'm penning this review you should know. These suits are the best, the sizing, the fit, the quality everything is perfect. I bought for my 3 sons and they all fit well, I was worried about the fit because one of my son is slender but tall so length things would be okay but waist toooo big, with this suit everything was on point. Ages: 13-14(about 5"4-5"5 have a little body wouldn't consider husky) got him size 18,
10-11(slender but a little tall for his age) got him size 14,
9yr old(average height and body size) got him size 8. Can't beat the price and for 6 pieces(pants, vest, jacket, shirt, tie, bowtie)
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Great buy
Color: Champagne, Size: 6 Years
I bought 3 sizes for my sons to wear at our wedding. They are heavy duty quality material. The dress shirts are a little stiff and snug but also great quality. Would buy again 100%
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Reviewed in the United States on May 24, 2026