Home > Billet steel Main caps – Hyundai/Kia G4fj,G4fd,Gf4c
Billet steel main caps

With the power levels getting up in the 500/600whp range and Rpms reaching 9K we started to see signs we needed a better cap option. We reached out to Billet Speedworks to produce the worlds first set of Billet steel Main caps – Hyundai/Kia G4fj,G4fd,Gf4c. Although many builds will not need these caps we didn’t want to leave customers that will need these hanging, waiting long for customs sets to be made, nor the high price of 1 off sets. We were able to get these on our shelves at a reasonable price and have them ready to ship same day in most cases!


  • Billet Steal Material
  • Pre Drilled for our 10mm Arp main stud kits
  • Flat design around the bolt surface for out future girdle plates
Billet Steel Main caps for the Hyundai and kia


Leave a Comment

Shopping Cart