J4 FABRICATION

10/15/2026

Took care of this here at Big R Differential & Gear and Big R Service Center. Need something welded, fabricated or need a racecar built up? Look us up!

✅Randolph, MN

612-670-6517

10/12/2026

09/19/2026

When other companies LEAN (😅) into you for help, we show up!

Lincoln Electric

09/08/2026

We love our NASCAR weekly racing series drivers. Sometimes the wall decides to change your setup without permission 😅

As for this race team, thank you for trusting us with your Ford 9” stock car rear end. We put new seals, weld repairs and put on a fresh coat of paint.

At J4 Fabrication, along with Big R Differential & Gear, we can take care of all your racing needs.

See you at the track🏁

Lefthander Performance

08/28/2026

What on earth are Randy and I up to!? Wrong answers only!

08/15/2026

07/28/2026

Come visit us today for all your Schaeffer's performance lubricants!

4451 Upper 291st St E
Randolph, MN 55065

07/17/2026

We can turn your old into new again🔥

Give us a call!

612-670-6517

07/14/2026

I introduce you to the biggest dishwasher this side of the Mississippi🤙 Big R Service Center Lincoln Electric