WHEELTOP 7800 Hydraulic Disc Brake Caliper, Front & Rear Hose Pre-Attached
Buy Now on eBay WHEELTOP RA7800 Hydraulic Disc Brake Caliper
A genuine WHEELTOP RA7800 flat mount hydraulic disc brake caliper — the same caliper fitted to the WHEELTOP EDS TX and EDS GeX wireless electronic groupsets. CNC-machined unibody aluminum construction with twin 21mm ceramic pistons, pre-bled with mineral oil and ready to install. Sold as a front + rear pair.
The RA7800 — Black CNC Unibody
CNC unibody body, 21mm dual ceramic pistons, flat mount fitment, and pre-bled mineral oil hoses.
RA7800
Black CNC unibody finish. Matches our WHEELTOP EDS TX and EDS GeX kits.
Front Weight
135 ± 10g
Rear Weight
170 ± 10g
Finish
Black CNC
Mount
Flat Mount
Ceramic Pistons. Unibody CNC Body.
CNC-machined unibody calipers with 21mm dual ceramic pistons — consistent, powerful braking in all conditions.
The caliper body is machined from a single aluminum block — no seams, no flex under hard braking. Twin 21mm ceramic pistons deliver excellent heat resistance and a consistent bite point across long descents. A unidirectional oil circuit ensures smooth, progressive lever feel from light modulation through to full stop. Compatible with 140mm and 160mm rotors.
Shimano Pad Compatible
Compatible with Shimano L04C, L05A, L04A, BR-RX810, and IIPRO-GLYS brake pads — widely available worldwide and easy to source at any bike shop.
Flat Mount. Pre-Bled. Ready to Ride.
Factory pre-bled with mineral oil — unbox, install, ride.
Flat mount only — the standard on modern road and gravel frames. Hoses are pre-cut and pre-bled from the factory: 900mm for the front, 1,550mm for the rear. The mineral oil system is non-corrosive and easy to maintain at home — no DOT fluid required.
Rotor Size
140 / 160mm
Flat mount only
Fluid
Mineral Oil
Non-corrosive, stable feel
Front Hose
900mm
Pre-cut, pre-bled
Rear Hose
1,550mm
Pre-cut, pre-bled
Specifications
Full technical breakdown of the RA7800 hydraulic disc brake caliper.
What's in the Box
×2
Brake Calipers, Front + Rear
×2
Pre-Bled Hydraulic Oil Hoses (900mm front / 1,550mm rear)
×1
Mounting Bolts + Torx Key
Compatibility & Buyer Notes
Please review the following before purchasing to ensure correct fitment.
Flat Mount Frames Only
Flat mount only — not compatible with post-mount frames. Rotor must be 140mm or 160mm.
Mineral Oil System
Runs on mineral oil, not DOT fluid. Do not mix or top up with DOT brake fluid — this will damage the seals.
Sold as a Front + Rear Pair
This listing includes one front and one rear caliper with matching pre-bled hose lengths. Hoses can be trimmed and re-bled to fit a different frame size if needed.
Thank you for visiting our listing. If you have any questions before purchasing, please send us a message through eBay and we'll respond within 24 hours.
