Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Wiseco 87mm Piston Ring SetWiseco Pro Tru line of pistons utilize a plasma moly pre gapped ring set for the budget minded consumer. Wiseco Sport compact kits include the high quality NPR XX rings, which are the best quality steel nitrided top rings and napier style 2nd rings. Our late model EFI lineup and several small block Chevy pistons are designed around the our 1. 2mm Steel Nitride and napier GFX ring sets. Many of our big block sets utilize a . 043 back cut top ring for
Wiseco Pro Tru line of pistons utilize a plasma moly “pre-gapped” ring set for the budget minded consumer. Wiseco Sport compact kits include the high quality NPR XX rings, which are the best quality steel nitrided top rings and napier style 2nd rings. Our late model EFI lineup and several small block Chevy pistons are designed around the our 1.2mm Steel Nitride and napier GFX ring sets. Many of our big block sets utilize a .043 back cut top ring for extra material thickness around the intake valve.
*Unless Noted - Rings Sold Individually - Order Specific Quantity Needed*
*Unless Noted - Rings Sold Individually - Order Specific Quantity Needed*
2nd Ring: 1.2mm Cast Iron / Napier Hook
Bore: 3.425
Oil Ring: 3/16 3-Piece Std Tension
Size: .039-.047-2.8mm
Top Ring: 1mm Alloy Steel / Gas Nitrated
Bore: 3.425
Oil Ring: 3/16 3-Piece Std Tension
Size: .039-.047-2.8mm
Top Ring: 1mm Alloy Steel / Gas Nitrated
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
4.2 ★★★★★
Based on 1677 reviews
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Product Reviews
★★★★★ 5
Soft and True to Size
Size: Medium, Color: Organic Cotton( 5* Multi)
Comfortable and true to size these boyshorts are perfect. It's great to know it's safe material and organic and it holds up well in the wash. I would definitely buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2024
★★★★★ 5
Comfy cute undies
One of the first things I switched out when I went on my non toxic journey, I really feel like they help my hormones balance and they’re so comfy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 1
Falls apart after 5 wash cycles
Terrible. Do not buy. Only last 5 wash cycles before unraveling and falling apart. Also, uncomfortable as hell.
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Reviewed in the United States on August 12, 2025
★★★★★ 2
Disappointing, durability despite softness
Size: X-Large, Color: Organic Cotton 2 (5 Black)
I really wanted to love these underwear. The material is incredibly soft and has a nice, thick feel that seemed promising at first. Unfortunately, the quality doesn’t hold up. After about 12 washes, the seams started coming apart, and within two months, I had to throw away two of the five pairs because the fabric separated from the waistband. It’s frustrating because they were so comfortable initially, but the poor stitching makes them a bad investment. I wouldn’t recommend these unless the company improves their durability or you’re OK with losing One or two pair of the five
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Reviewed in the United States on March 27, 2025
★★★★★ 5
Love these Undies
I LOVE these underwear! Fabric is great, washes well and durable. The need more!
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Reviewed in the United States on November 30, 2025
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