Miller Mountain High Performance / Performance Specialties Inc.

04/11/2026

03/04/2026

02/12/2026

🎉 Happy 5-Year Anniversary, Miller Mountain High Performance! 🎉

Five years ago, Miller Mountain High Performance took the wheel on High Street—and Pottstown’s car community has been stronger (and faster) ever since. From dyno tuning and testing to custom turbo installs, superchargers, drivetrain work, and full performance builds, they’ve become a go-to shop for enthusiasts who want quality and real expertise.

Beyond the shop, they’ve also helped fuel the local scene—supporting events like Pottstown Nights Car Shows and staying connected to the racing world through partnerships like Maple Grove Raceway.

If you haven’t checked them out yet, they’re located at 323 E. High Street, Pottstown. Here’s to 5 years of horsepower, community, and next-level builds—and to many more! 🏁🔥

Miller Mountain High Performance

01/15/2026

Factory-inspired style meets real off-road muscle. 💪

The Rough Country FXS Front Bumper upgrades your 4th-gen Silverado with aggressive looks, winch-ready strength, SAE fog lights, and OEM-style fitment. Built tough. Trail ready.

01/13/2026

Upgrade Your Lighting.

Rough Country’s 6.5" Round LEDs deliver 14,040 lumens, a spot + flood combo, and dual-color amber/white DRLs. Built with IP67 waterproofing, die-cast aluminum housing, Moisture Breather tech, a full wiring kit, RC covers, and backed by a 3-year warranty.

01/06/2026

Rough Country’s 2" SAE Driving Light Pods deliver 9,600 lumens from just 96W, with SAE J583 compliance for safe on-road use. Built with IP67 waterproofing, die-cast aluminum housing, Moisture Breather tech, a premium wiring harness, and a 3-year warranty.