








🛵 Upgrade your ride’s stopping power with pro-grade precision!
The GOOFIT Rear Brake Master Cylinder with Reservoir is a high-quality aluminum component designed for 50cc to 125cc Chinese ATVs and dirt bikes. Featuring a precise 45mm mounting hole spacing and a 100ml integrated brake fluid reservoir, it converts mechanical pedal input into hydraulic braking power, enhancing safety and control. Easy to install with included hardware, this durable master cylinder ensures long-lasting performance and reliable stopping in every ride.







| Material | Metal |
| Brand | GOOFIT |
| Color | Silver |
| Product Dimensions | 0.16"L x 0.16"W |
| Exterior Finish | Aluminum |
| Special Feature | Easy to Install |
| Included Components | Installation Hardware |
| Theme | Motorcycle |
| Item Weight | 10.56 ounces |
| Center To Center Spacing | 45 Millimeters |
| Metal Type | Aluminum |
| Handle Material | Aluminum |
| Customer Package Type | Standard Packaging |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | GOOFIT |
| UPC | 710373793842 |
| Part Number | C029-155 |
| Item Weight | 10.6 ounces |
| Item model number | C029-155 |
| Is Discontinued By Manufacturer | No |
| Finish | Finish |
| Volume | 100 Milliliters |
| Item Package Quantity | 1 |
| Number Of Pieces | 4 |
| Special Features | Easy to Install |
| Batteries Included? | No |
| Batteries Required? | No |
S**A
Modification and bleeding
I just got this and installed it on my kiddos kt 196 coleman go kart. I had to cut the bolt to down to fit. Also on bleeding the brakes. I noticed many complained about this in the reviews. I removed the hose barb on top of the cylinder, and filled the top with fluid, while pumping the brake. It started to lower almost instantly i then replaced the barb, and filled the reservoir. 2 fills yielded fluid out of the bleeder screw on the caliper. Great first test drive and thumbs up from my 6yro.
C**S
Works good
Good product, works well with my application, I did have to modify the connection for the pedal to get it to work but thats just me.
R**S
Works as intended
Seems to be good quality. Bled and operates easily So far so good.
D**Y
Unsure, Having Trouble.
I bought this for use on a vintage KZ750. It arrived very quickly and looks great. For my application I did have to adjust the mounting holes but that was no surprise. The only problem with it is that the cylider won't build pressure and therefore can't acuate the brake caliper. I've bled the brakes several times but it still seems like there is air still trapped somewhere.I plan to try again with a pump today and will update this review once I either get it to work or determine that something is wrong with it.So far, it's 3 stars. My reasoning: fast shipping, product appears to be generally well made, and I've had trouble with the brake on this motorcycle before so I am not wholly convinced that this cylinder is the cause but I can't tell quite yet.
C**R
Worked with modification
It was different but worked with my coleman kt196 with modification. I had to trim the bolt and pedal bracket. Otherwise fine. Be ready to bleed it as is expected. Quality is actually very acceptable.
H**O
One thing that I really liked about the product is that it is great quality
One thing that I really liked about the product is that it is great quality. The texture is not cheap and I highly recommend this product. Usually this type of product is very expensive but this company has great quality and durability. I recommend that it is better to buy here then other places were it cost over $50. It comes nicely packaged in the amazon box and in a beautiful cover tightly sealed and secure. I highly recommend you buy this one only because it has quality and is way better then the ones in those expensive stores. Thanks
T**.
Saved 60-95 bucks!
Everything lined up, but the holes aren't tapped. I tapped the holes and it fits my 2008 Hyosung gt250r just fine. Brakes are super firm now.
S**O
Way higher quality than others. Works well good quality
Bought for my 83 Honda 250r Atc. Worked excellent. Bleed the system easily and is way better quality than another brand I tried first. With some minor modification. I had to drillOut the mounting holes a little bit but that was it. Totally worth it
Trustpilot
1 month ago
1 month ago