Quantum Motorworks

The best motorcycle shop in town. Took my R6 for maintenance, it came out running better than before! Brian is the shop mechanic and is extremely knowledgeable on all aspects of power toys. They even do custom work. Will definitely come back to get my bike worked on in the future

I crashed my Suzuki M109R and called Brian. He responded fast, towed my motorcycle and fixed fast with very affordable price. I already recommended him to my fellow rides. Brian is down to earth and affordable.

I Took my blaster to Brian because it was having some carb issues (or so I thought) but turned out to be my reed valves being completely broken, Brian called me and asked what I wanted to do before making any moves for himself like most shops will do yo to charge you up the ass and then once instructed, proceeded to order any parts that where needed, he returned the bike to me running like a champ after sitting In my back yard for about a year and a half, I will definitely go back to him whenever I need advice or work done to any of my quads… Thanks Brian!

Can’t select a negative star rating. Although Brian was quick to respond and discuss issues with my bike, he took over 5 months to rebuild carburetors on my VZ800. 5 MONTHS! Not weeks, MONTHS! When I dropped off the bike on 10 Oct 2014, I was assured I would receive the diagnostic report by Monday the 13^th of Oct 2014. Well, after many text messages and phone calls, I finally received the diagnostic report 29 Dec. over 2 Months later. Wow! I didn’t receive the ‘repaired’ bike back until 24 Feb 2015. 5 MONTHS later. Many, many parts on my bike were covered with rust, including the front brake rotor, cooling fan cover, saddle bag studs and seat studs. Bike didn’t perform as promised. Taking to a dealer repair shop. Never going to Quantum Motor Works again. I wouldn’t allow Quantum Motor Works to put air in my bicycle tires.

Brian was quick to respond to my phone call and fixed my Ninja ZX1400 in hours. I will definitely give him a call next time my toys are having issues.

pretty good for towing, not for service.
I had my fz6 stuck and he towed it, he was really responsive at first but stopped picking up my calls and responding to my texts once he got my bike. it was just the sensor that was out but he told me it was probably the battery. he did a diagnostic but didnt help at all. ended up fixing it by myself

Brian was quick to tow my scooter, but once he had it in his hands, he took his sweet time.
When Brian came to tow my scooter I told him the issue I had; hard time starting in the morning, but once it warms up it runs fine. Recently it just wouldn’t start.
A couple of days later he ran a compression test and told me it had low compression and wanted to replace the engine. I called him up right away and told him that I couldn’t afford to pay for a new engine and asked him to check out the cause of the low compression. He stated that he would.
Weeks went by and I did not hear from him. I would call and text him to follow up. sometimes he would answer, most of the time he wouldn’t. The times he answered, he would make excuses and said he was backed up with other bikes.
After 5 weeks, he told me that he was now free to look into the scooter. A couple of days later he called me up and said that we would have to take apart the engine and the labor cost and parts price was going to be the same price as if I would have replace the engine. By that time I was fed up with Brian. I paid Brian an additional tow cost and diagnostic cost to have him tow my scooter back.
After having the scooter for 6 weeks he brought it back with dirt all over it. The only thing he did was run a compression test and unscrew the trunk box and seat.
If you don’t know what you are doing, don’t have the time, or don’t want to do the work, just say so and not waste everyone’s time.
Once I got my scooter back I towed it to a real repair facility and all it needed was a value adjustment. Within three days it was up and running.

I don’t know how good Brian is with motorcycles, but with scooters,
save yourself the time, money, and headache and take your scooter somewhere else.

I have a Yamaha YZ250 dirt bike, and needed some major work done on it. I brought it over and was greeted with a handshake and professional evaluation of my bike.
What I really like is the quality he puts in to my bike, like it was his own. It’s hard to find an honest shop you can trust. My bike came back running like brand new. I’m really satisfied, I recommend Quantum Motor Works to anyone needing anything small to complete work done on your bike.

Local. Does great work. Needed a valve job along with a new clutch on my Ducati 1098. Did it all within a week!
Great work for way cheaper costs than the shops! Easy to work with. Brian really knows his stuff.

I was looking for someone to install my Hotbodies undertail section for my 2013 BMW S1000rr. Although its not a huge job, I still wouldn’t want just anyone touching my bike. I was looking for a local shop and came across Quantam Motorworks. I gave him a call in the morning and scheduled to bring my bike an hour later.
From his website, you’ll gather that motorcycles are definitely a passion for him. As a rider himself you can tell than he really enjoys working on motorcycles. He works out of the garage of his house in Chino Hills, but the benefits of this is that you won’t have to pay for all the extra overhead that shops have. He is very meticulous and made sure that everything lined up just right and really takes care of your machine.
Brian is definitely an honest guy and I’m glad to have found someone local who I can go to for all my motorcycle needs.
$ 50 for labor was definitely worth it!