
OD474
DESCRIPTION
This is designed by the BOLANY design team, the four-piston oil pressure disc brake can release stronger braking force, integrate 6 highlights,-piston design, double circuit oil flow, CNC machining, compatibility is 160-220 mm, high-quality aluminum alloy material, quick installation etc.
FEATURES
Four piston drive, stronger braking power, faster braking response, and better handling performance.
Dual circuit oil flow system, long-lasting and stable performance, ensuring long-term stability.
Compatible with a variety of disc thicknesses, specially designed for mountain bikes, can be equipped with 160-20mm brake discs, easily coping with various terrains.
CNC machined production manufacturing 6061 aluminum alloy calipers and aluminum alloy pistons, reducing without sacrificing performance.
Specifications
Model
BK-20
Caliper type
Four-piston
Material
6061 Aluminum alloy
Braking
641N
Brake hose length
830mm / 1620mm
Disc diameter
160mm - 220mm
Disc thickness
1.7 - 2.3mm
Brake fluid type
SGS above standard mineral oil
Brake pad type
Heat brake pad
Color
Black
Weight
Front 350g / Rear 380g







Service
We provide PDF documents for installation instructions for various products.
You can check out our installation and maintenance videos for FrontFork.123
OD474
2024-2025 Catalog
Learn how to quickly set sag, air spring pressure, compression adjustments, rebound adjust, additional tuning options and more.
The recommended settings in this tuning guide are designed to be a starting point, in order to get you out on your first ride in as few steps as possible.