Always great service. I've had several brake boosters rebuilt over the years by them.

Called Karps, spoke with Sally and inquired about having 2 power boosters rebuilt. My first question to Sally is, after you receive my boosters how far out are you guys with your rebuild / returns? She says 3 or 4 days. The next question which is "very Important to me "will, you be returning MY power boosters"? She tells me ABSOLUTELY! OK Great. So, I send off the power boosters which includes a note in the box typed on 11" x 8.5" note in a plastic sleeve stating same, " I want MY power boosters returned". Additionally, during the 2 weeks that they had my boosters, I spoke with Jeff, reminding him that I wanted my Boosters returned. Please realize, my Boosters were very clean and were free of any rot or rusty degradation. Anyway, so when I finally received the boosters, they were NOT MY BOOSTERS and were of course pitted from very old rust. So, if you don't care what the parts look like when you finally get them back, use Karps. If you do care, DON'T! read more

Sent a booster to Karps for rebuild mid September 2025, Jeff had given an estimate earlier that I confirmed. October 8th they confirmed it was being worked on. Now November 8th and they no longer answer their phone or return e-mail. read more

This brake rebuild extraordinare is a rare find. Jeff and staff saved the day,my electronic rear brakes were damaged at a friends repair shop. $800 ea. for new calipers at Audi,which had to be ordered from GERMANY! The ONLY source for replacement I learned. THIS SHOP ROCKS! I am an instant loyal customer. read more

For power brake component servicing I used to use a local service located in San Jose, CA. However due to a drop off in quality and workmanship, I switched to Karp's at the advice of a knowledgable friend. I am sure glad I did! Karps recently recently rebuilt a power brake booster for my 1974 Lancia and they did a super job! Their prices are very reasonable too. The booster came out like new. If your car or truck needs to have any brake components rebuilt, from master cylinders to calipers, and anything in between, talk to Jeff at Karps Power Brake Supply. read more

Karps Power Brake Supply - Auto Parts & Supplies Near Me - Chino, California

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Hey guys, I run a BMW/ Mini cooper repair shop in the Los Angeles area and we work on our share of older 60s and 70s BMWs which on occasion, may need clutch or brake hydraulic components that are no longer available. Here is where Karps PBS comes in. We have been dealing with Karps PBS for a few years now and have had nothing but great experiences with Jeff and the guys. Brake/Clutch hydraulic parts leave here and come back like new. Most importantly , the parts perform as intended and we have never had to ship back a part because of shoddy workmanship. Its done once and done right. Thanks Karps PBS!! read more

Great service! Had the brake master cylinder and brake booster overhauled on my 70 Plymouth Superbird. Jeff is top notch and a standup guy.

I have a 1956 italian 3 wheeler with impossible-to-find brake cylinders in the wheels. They are small and no two are the same because they were sand cast. These guys took them in and refurbished them like new. This was 5 years ago and they're still working great. The price was great too. read more

I took a master cylinder to Jeff. It belonged to an earlier Ford truck, 1973. He told me to leave it cause he would need to inspect it from the inside to give me a price. He said it may need to be sleeved or he try to find me a new one. Anyway, he seemed nice and I left him the part. Since I didn't hear from him, I called him the following day. He told me he was still looking into the matter and would call me right back. No phone call. A few days later, I decided to visit the shop. He was there and at first, forgot about the part I brought in a few days ago. He said he was still looking into the matter and would call me. Since we have been through this before, I asked him if I could see the part. At first, he hesitated, and went to the back of his shop to retrieve the part. He returned with a plastic tray with some internal cylinder parts but not the housing. I asked him about the housing. He said it was next door being looked at. IGood demanded to see it. Reluctantly, he went to retrieve it. He came back with the housing. It was actually worked on. I asked him why he worked on it before calling me.( I needed to know how much it was going to cost because the part belonged to my cousin.) He didn't know what to say and attempted to confuse me. It didn't work and he ended up apologizing. He wanted to charge 170 dollars but we settled at 100. I think he was being evasive and misleading. That is no way to do business. read more

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after leaving my brake unit with Jeff. to be tested and rebuilt $90 parts $160 labor. supposed to take one week. one month later after repeated calls to Jeff. ready for pick up. on arrival not ready he said he still had to test it takes one hour came back hour later. jeff tells me his test equipment is not working but it should be fine just needs an accumulator ball $180 on ebay purchashed part installed it now motor dosen't work nothing wrong with motor before I DONT TRUST THIS GUY VERY BAD EXPERIENCE oh yeah he still charged full price even though not all that he claimed he would do was done read more

Excellent fast reliable service here!! Jeff was very helpful! He stayed and waited a few minutes for me to drop off my brake booster after it was time to close, and even had it repaired and ready for pick up the very next day by 2 pm. And also at a more than reasonable price! read more

If you are a meticulous vintage / classic car owner in need of quality work, stay away from these guys. I won't go into extended specific details, but, this company has cost me valuable time and money. I was issued a partial refund which I did appreciate, but, I'm having another company redo the job done by Karps (Twice). I was very specific on what I wanted, specifically stating that I was preparing our 1974 Big-block corvette for NCRS and wanted the brake booster rebuilt and powder coated. After being quoted then billed a different price, billed for parts I didn't need (that's where the refund came in) I received the booster with CRAPPY powder coating. And. Sent it back, received it yesterday, not much better. Very noticeable nicks where the housing comes together and two very noticeable scratches, looks like someone tried to touch it up with regular paint to hide it. This place will never get my business again; I'd stay away if I were you!! read more