{"product_id":"nissan-skyline-r34-gtr-piston-ring-set-oversize-1-0mm-rb26dett-v-spec-n1","title":"Nissan Skyline R34 GTR Piston Ring Set, Oversize 1.0mm RB26DETT (V-Spec\/N1)","description":"\u003cp dir=\"auto\"\u003eWhen rebuilding or refreshing a bored RB26DETT in your R34 Skyline GT-R, using the correct oversize piston rings is critical for proper sealing, oil control, and long-term engine reliability. The Genuine Nissan Piston Ring Set (Oversize 1.0mm \/ .040\", part number 12038-24U20) is the factory-correct OEM replacement designed specifically for the RB26DETT. This complete kit includes the top compression ring set, second compression ring set, and oil control ring set, delivering the precise tolerances and materials Nissan engineered for optimal performance in oversize applications.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eOriginally specified for high-performance variants such as the V-Spec, V-Spec II, N1, and Nür\/M-Spec models, these 1.0mm oversize rings are ideal for RB26DETT engines that have been bored to accommodate the increased piston size. They restore proper ring-to-cylinder wall contact, compression, and oil control, helping maintain the RB26’s renowned power delivery and durability under high boost and RPM.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAt Terra Firma Automotive, we supply this genuine Nissan Oversize 1.0mm Piston Ring Set as the authentic choice for R34 GT-R engine builders and restorers. As a brand-new OEM kit, it guarantees perfect fitment and factory-level performance that aftermarket rings often cannot match. Whether you’re performing a full engine rebuild on a V-Spec or N1, or refreshing a bored RB26, these rings help keep your GT-R strong, efficient, and ready for serious use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Nissan OEM Piston Ring Set\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOversize 1.0mm (.040)\u003c\/li\u003e\n\u003cli\u003eFor R34 Skyline GT-R RB26DETT V-Spec\/V Spec II, N1 and NUR\/M SPEC NUR\u003c\/li\u003e\n\u003cli\u003eCan Be Used On Any RB26\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nissan","offers":[{"title":"Default Title","offer_id":51999533203777,"sku":"12038-24U20","price":248.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1992\/7247\/products\/12033-67S20.jpg?v=1619294418","url":"https:\/\/tfaspeed.com\/products\/nissan-skyline-r34-gtr-piston-ring-set-oversize-1-0mm-rb26dett-v-spec-n1","provider":"Terra Firma Automotive","version":"1.0","type":"link"}