Product Description
Restore reliable front brake operation on your CSC SG250 with a complete replacement master cylinder assembly. CSC part SG8-103 replaces the right-hand front brake master cylinder and gives you the complete handlebar control assembly instead of making you piece together the lever, reservoir and switch separately.
This assembly includes the black adjustable brake lever, integral DOT 4 fluid reservoir, 22mm (7/8-inch) handlebar perch and clamp, two-terminal brake-light switch, hydraulic banjo connection, banjo bolt and sealing washers as shown.
SG8-103 cross-references directly to Zongshen OEM 53012-J1K8-C00066. That same factory part number is also cataloged for the ATAKI Week9 PR300 and Week9 PR300 Pro, giving owners another useful OEM reference when identifying this master cylinder.
Fits
- CSC SG250
- ATAKI Week9 PR300
- ATAKI Week9 PR300 Pro
Key Features
- Complete right-hand front brake master cylinder assembly
- Adjustable front brake lever included
- Integral rectangular brake fluid reservoir
- For 22mm / 7/8-inch motorcycle handlebars
- M10 x 1.25 right-hand mirror mounting thread
- M10 x 1.25 brake hose banjo connection
- Two-terminal mechanical front brake-light switch
- Reservoir marked for DOT 4 brake fluid
- Black finish
Part Numbers
- CSC: SG8-103
- Zongshen OEM: 53012-J1K8-C00066
- Separate replacement lever: CSC SG8-104 / Zongshen 72310-J1K8-C00066
Fitment note: Other Zongshen motorcycles use similar-looking 22mm front brake master cylinders, but different OEM numbers. For applications outside those listed above, compare the OEM number, mirror thread, brake hose connection and switch configuration before ordering.
