$75 - ARP main cap stud kit (90-05) NIB, N. CA
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$75 + shipping - New, never used ARP main cap stud kit (#218-5401) for all 90-05 Miatas, $75 + shipping from 95461.
(Flyin' Miata helped developed kit, $120 thru them) These studs are the most beneficial piece in keeping your Miata from spinning a rod or main bearing at high rpm, high boost situations;
(I've killed two 1.8's bearings without these... crank has more play then you'd like at 7K RPM) Simple & effective but cheaper then factory 01-05 MBSP.
![Name: ARP-Mainz.jpg
Views: 55
Size: 95.5 KB](https://www.miataturbo.net/attachments/miata-parts-sale-trade-5/196364d1501234295-%2475-arp-main-cap-stud-kit-90-05-nib-n-ca-arp-mainz.jpg)
![Name: ARP-Mainz2.jpg
Views: 57
Size: 95.4 KB](https://www.miataturbo.net/attachments/miata-parts-sale-trade-5/196365d1501234295-%2475-arp-main-cap-stud-kit-90-05-nib-n-ca-arp-mainz2.jpg)
http://www.flyinmiata.com/index.php?...umber=04-66210
(Flyin' Miata helped developed kit, $120 thru them) These studs are the most beneficial piece in keeping your Miata from spinning a rod or main bearing at high rpm, high boost situations;
(I've killed two 1.8's bearings without these... crank has more play then you'd like at 7K RPM) Simple & effective but cheaper then factory 01-05 MBSP.
![Name: ARP-Mainz.jpg
Views: 55
Size: 95.5 KB](https://www.miataturbo.net/attachments/miata-parts-sale-trade-5/196364d1501234295-%2475-arp-main-cap-stud-kit-90-05-nib-n-ca-arp-mainz.jpg)
![Name: ARP-Mainz2.jpg
Views: 57
Size: 95.4 KB](https://www.miataturbo.net/attachments/miata-parts-sale-trade-5/196365d1501234295-%2475-arp-main-cap-stud-kit-90-05-nib-n-ca-arp-mainz2.jpg)
http://www.flyinmiata.com/index.php?...umber=04-66210
![](http://www.flyinmiata.com/Store/images/04-66210.jpg)
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