We don't do everything. We do exhaust, mufflers, and trailer hitches better than anyone in Orange County — and we back it up with decades of focused expertise.
From a rumbling exhaust to a new trailer hitch — we've seen it all and fixed it all. Specialists, not a general shop.
Leaking, rattling, or failing exhaust? We diagnose and repair the full exhaust system — manifolds, pipes, flex sections, and beyond.
Our SpecialtyPerformance builds, dual exhaust, cat-back systems. We fabricate and install custom exhaust solutions for cars, trucks, and SUVs.
Our SpecialtyLoud, failing, or blown muffler? We stock and install quality mufflers for virtually every make and model — fast turnaround.
Our SpecialtyOBD-II codes, failed smog checks, or stolen converters — we supply and install CARB-compliant catalytic converters.
Our SpecialtyTowing, hauling, or adding a bike rack — we install class I through class IV trailer hitches and wiring harnesses.
Our SpecialtyPads, rotors, calipers, and brake fluid. Keep stopping safely — we perform full brake inspections and service.
Also AvailableConventional, synthetic-blend, or full synthetic. Quick, affordable oil changes while you wait.
Also AvailableCheck engine lights, tune-ups, and more. When something's off, we can diagnose it and get you sorted.
Also AvailableMost shops do a little of everything. We've spent years mastering exhaust systems and trailer hitches — so when you come to us, you get focused expertise, not a guess.
Exhaust and hitch work is all we obsess over. That focus means faster diagnosis, better parts knowledge, and fewer comebacks.
A 4.6-star rating across hundreds of real Yelp reviews tells the story — honest work, fair prices, and no upsells.
Free estimates before any work begins. What we quote is what you pay — no surprises at pickup.
Most exhaust repairs and hitch installs are same-day. We respect your time as much as your vehicle.
"We're not the shop that does oil changes, tires, transmission, brakes, and exhaust. We're the shop that does exhaust and hitches exceptionally well — and Mission Viejo has trusted us for it."
4.6 stars across 279 reviews on Yelp. Here's what a few customers had to say.
"Brought my truck in for a rattling exhaust — they had it diagnosed and fixed in under two hours. The price was exactly what they quoted me, no add-ons. I've been to a lot of shops in OC and Collins is genuinely one of the most straightforward I've dealt with."
"Had a trailer hitch installed on my SUV for a cross-country move. They recommended the right class hitch for my weight needs, got me in next morning, and finished before noon. Wiring harness works perfectly. Highly recommend for anyone who needs a hitch done right."
"My catalytic converter was stolen — a nightmare situation. Collins sourced a CARB-compliant replacement, got me back on the road in one day, and didn't try to sell me anything I didn't need. Fair price, fast work. These guys are the real deal."
Read all 279 reviews on Yelp →
Call us for a free estimate — most jobs are same-day. No appointment required.
📞 (949) 830-6687 — Call NowConveniently located in Mission Viejo. Walk-ins welcome — most exhaust and hitch work done same day.
25721 Obrero Dr
Mission Viejo, CA 92691
| Monday | 8:00 AM – 5:00 PM |
| Tuesday | 8:00 AM – 5:00 PM |
| Wednesday | 8:00 AM – 5:00 PM |
| Thursday | 8:00 AM – 5:00 PM |
| Friday | 8:00 AM – 5:00 PM |
| Saturday | 8:00 AM – 2:00 PM |
| Sunday | Closed |
Tell us about your vehicle and issue — we'll give you an honest quote, no strings attached.