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Proven Performance

4.4 (7 reviews)
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Services - Proven Performance

Motorcycle repair

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What can I say the guys at Proven Performance have done it again this is one of the best shops to go to in Oakland Nice friendly people are very knowledgeable I they have done several things to my bike it's always done right the first time

George A.

The guys at proven performance are quick certified great mechanics had my bike in an out in a day an treat u right.

Getting a complete engine rebuild and some extras

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15 days ago

Unique service and offerings. Woman owned and operated with specialized Harley Davidson service and accessories.

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2 years ago

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2 years ago

I come here every time I need something done on my bike good customer service fast and friendly

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6 years ago

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10 years ago

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12 years ago

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10 years ago

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East Bay Motorsports - Delivery of my 390

East Bay Motorsports

(644 reviews)

S O to Amid for Helping me out to purchase My 2025 Zx10r.Very Good Costumer service.Definitely…read morerecommended.and i'm going back again to do business in future...

I purchased a brand new 2021 Sea-Doo RXT-X 300 from East Bay Motor, along with an extended…read morewarranty. After only 42 hours of use, the engine failed. From that point, the experience was unacceptable. The jet ski sat at their facility for 10 months, left outside and uncovered, exposed to the elements. There was no urgency, no communication, and no basic care for customer property. Instead of standing behind the product, they pushed me to pay $9,500+ for a replacement engine, despite the extremely low hours. They also supported a claim that the spark plug in the engine was not original at the time of failure ,which is not accurate and this contributed directly to the denial of both warranty and insurance. Because I lost trust, I sourced my own replacement engine (18 hours) and shipped it to them. It then took another 3 months just to install it. When I picked up the jet ski: * The trailer hitch was damaged * The electrical adapter was missing * The cooling system had 0% coolant (which could have destroyed the engine again immediately) * My new lithium battery was missing, replaced with an old 2020 battery * The jet pump assembly was shaking, indicating improper installation I was told missing items would be sent to me. Nothing was sent. After waiting over a month, I had to purchase everything myself. Now I have to take the jet ski to another shop to correct the issues. Bottom line: This was not just poor service -- it was negligence, lack of accountability, and unprofessional handling of a major repair. I strongly recommend thinking twice before trusting this shop with your equipment.

KC Engineering

KC Engineering

(256 reviews)

SoMa

I was an actual customer, im not an ex employee or a business competitor, yelp took down my…read moreoriginal review because of pressure from KC Engineering, but the facts are the facts and im warning others that this place of business is bad. I Do NOT recommend . First off I went in because I needed tires, I had a blow out in my rear tire and decided to just get both replaced. So, the tires were a little pricey and the labor charge was insane. But I value quality over price so I went for it. The tires are terrible (Michelin) it doesn't seem balanced and it just doesn't feel right. Usually with new tires I get this secure sensation when I ride ( not this time) Secondly, they were pitching me on other services that I found strange because I just had them done at a school with an instructor. Thirdly, on my way home, my storage box fell off my bike on the freeway, when I went back, they claimed they hadn't touched it, it was odd to me because, I ride everyday and had no issues. Lastly, instead of apologizing, I get a mechanic yelling at me saying i was at fault. When I asked to speak to the owner, I was told that he lives out of state. After all this mess I spent hours reading past reviews and found that others had similar experiences, but my biggest takeaway was how the owner/s replied to some of the commentators. I found it defensive, rude and never taking accountability, always deflecting the bad service or work they've done. Truth is truth, my review is based on my horrendous experience I had at this place of so called business.

Bewa this is a dirty business, they do anything to cause an accident after you leave the shop, they…read moreare evil. In my own experience I bought a tire and I paid for the installation , I noticed that they applied a bunch of Vaseline petroleum jelly all around the tire so quickly and without asking me for approval, I didn't ask why since they claim to be professionals., as soon as I left the shop and I tried to make a right turn l felt to the right without warning, the bike felt on top of my right leg in the middle of the street trapping my leg, breaking m right side mirror and my front brake. I couldn't get up but none of the employ or that shorty owner of the shop came to help or at least come and see f I was OK. One of thei customer helped me lift the bike so that I can get my leg out of it, but if I hadn't ask for help I don't know for how long I would have remained laying down in the middle of the street in front of their shop , risking my self getting hit by a car, I bro the bike back inside the shop and had them install a brand new brake lever and a mirror, I asked them why they put grease on the tires even if they are used tires, and they said it was mandatory to do that to all tires sales.

Mean Marshall's Motorcycles

Mean Marshall's Motorcycles

(8 reviews)

West Oakland

Super knowledgeable classic British motorcycle experts! Rebuilt my 70 Bonnie motor on time and…read morewithin budget keeping me well informed with updates along the way. Straight shooters! The motor runs amazingly well and I've put it through grueling rides. Thanks Nils and John!

STAY AWAY. DON'T GIVE THEM ANY BUSINESS…read more THEY ARE CREEPS. I was thinking about an old girlfriend, who is having a bad time now with addiction. When she and I lived together, our way around was on my 1970 Triumph Trophy. That bike didn't help anything between us! They nicknamed Lucas Electrics "The Prince of Darkness" for good reasons! We left the Bay Area, and I returned years later alone. I decided to rebuild the top end, and I found a nice cylinder head to replace the one I had. At that time, leaded gas wasn't being sold, and recessed exhaust valve seats were an issue, so I had a nice head to work with. It took them forever to bead blast the head: they didn't get it done when they had said it would be done. I was working more than full time, and using my van to get around, which was in such bad shape that I had to avoid any hills around San Francisco (or get a running start). The shop finally called and said the head was ready- much later than they had promised it. I didn't have any time, within their shop hours, to go pick it up, and I didn't have time for much of anything, unlike when I expected the head to be finished. When I was able to make it over to the shop, they had doubled the cost of the work with "storage fees"! I told them that the job wasn't done when they said it would be done, and that I refuse to pay any extra. Mr. tough guy got all big and puffy and he told me that he wouldn't return my property unless I paid what he wanted, which I refused again, and then he took a swing at me and hit me! They live up to their name: don't give them anything... there are other places to go for what you want, so go to them.

Proven Performance - motorcyclerepair - Updated May 2026

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