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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
Supertech Performance Valve Spring & Retainer Kit - R52/R53 MINI (S & JCW)This valve spring and retainer kit is for performance built engines that demand it. Dual Valve Spring for Triple Groove Valves. Specs: Inner Spring (OD ID): 20mm 15. 2mm Coil Bind: 20. 7mm Pressure (Open): 210lbs@11mm Rate: 12. 1lbs mm Max Net Lift: 14mm Pressure (Seat): 76lbs@34. 8mm Outer Spring (OD ID): 27. 5mm 20mm Note: Always confirm part number fitment to your specific vehicle.
This valve spring and retainer kit is for performance built engines that demand it.
Dual Valve Spring for Triple Groove Valves.
Specs:
- Inner Spring (OD/ID): 20mm / 15.2mm
- Coil Bind: 20.7mm
- Pressure (Open): 210lbs@11mm
- Rate: 12.1lbs/mm
- Max Net Lift: 14mm
- Pressure (Seat): [email protected]
- Outer Spring (OD/ID): 27.5mm / 20mm
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
4.9 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 4
sizing
Size: 3X-Large, Color: Chocolate
Good quality, warm, sizing was dificult. I normally wear a size 12 shoe so I ordered an x-large but it was way too small. they shipped a size 11. Amazon was great with their free returns. I now ordered a xxx-large and they fit perfectly. x-large=11 and xxx-large=13
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2013
★★★★★ 5
Good deal
Size: 12, Color: Tan
True fit, slip resistant bottoms and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
★★★★★ 3
Slippers are nice But
Size: 11, Color: Chocolate
Slipper are warm and soft. The problem is the soles leave marks on the
floor. Washed the soles, still marks everywhere on hardwood floors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2023
★★★★★ 5
Very comfortable
Size: 3X-Large, Color: Chocolate
Ahhhh! I think I found my slippers! They are wide enough, long enough, sturdy enough and comfortable. I might even buy a second pair to have handy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2024
★★★★★ 5
Great toy
One of the best dog toys ever! Well made & sturdy enough to withstand hrs of play & tug between my Lab & my Westie.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
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