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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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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
4.0 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Delivery on time
Size: XX-Large, Color: White
Good quality of fabric
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Great material, sharp looking suit!
Size: 7, Color: Light Blue
Very nice suit! We got tons of compliments. Please note it does NOT come with an undershirt. We used this for a First Holy Communion, but I wouldn't hesitate to use it in a wedding! The material was the best that I've seen compared to the four other suits I bought on amazon (I was skeptical and crunched for time)...this won! Great value for the money too. My kid felt very sharply dressed, and wants to find another occasion to wear this light blue suit lol
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Would repurchase
Size: 8, Color: Beige
Perfect for a communion. Would absolutely recommend!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Perfect
Size: 7, Color: Light Blue
Love it . Good quality . Value for money . Perfect color . R sizing
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Calidad en Tela y presentación.
Size: 10, Color: Beige
El Traje divino, tal como la imagen. Solo le quedó un tris grande a mi hijo y listo.
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Reviewed in the United States on April 20, 2026