OEM Front Disc Brake Lower Pump Assembly for HENGJIAN S8-Z300
The HENGJIAN front disc brake lower pump assembly S8-Z300-22.1-09 (9) is the original hydraulic caliper unit designed specifically for the S8-Z300 enduro for demanding off-road and track use, it restores factory braking performance with consistent, well-modulated stopping power on the front wheel.
Key Features
- OEM HENGJIAN component matched to the S8-Z300 front brake system.
- Complete lower pump assembly (front brake caliper body with internal hydraulics).
- Designed for hydraulic front disc brake setups used on the S8-Z300 platform.
- Calibrated for predictable lever feel and stable braking on loose or technical terrain.
- Durable construction suitable for enduro, cross-country and intensive training use.
Technical Details
| Brand | HENGJIAN |
| Manufacturer ID | S8-Z300-22.1-09 |
| Product type | Front disc brake lower pump assembly (hydraulic caliper) |
| Brake position | Front wheel |
| Brake system | Hydraulic disc brake |
| Vehicle type | Off-road / enduro motorcycle |
| Original application | HENGJIAN S8-Z300 2-stroke enduro |
Integration in the S8-Z300 Front Brake System
This OEM front disc brake lower pump assembly is part of the dedicated S8-Z300 braking system and is designed to work together with other original components from the same parts group:
- Front brake hose S8-Z300-22.1-01, connecting the upper master cylinder to the lower pump.
- Front brake copper brake pads S8-Z300-22.1-9B, fitted inside the caliper body.
- Front disc brake lower pump bracket S8-Z300-22.1-9A, which positions and supports the caliper on the fork leg.
Using the matching original components helps maintain the intended brake balance, lever feel and durability of the S8-Z300 platform in enduro conditions.
Compatibility
| Brand | Model | Year |
| HENGJIAN | S8-Z300 | – |
Typical Use Cases
- Replacement of a worn, damaged or seized front brake caliper on the HENGJIAN S8-Z300.
- Restoring consistent front braking performance after intensive enduro or race use.
- Refitting the original front brake setup after modifications with non-OEM components.
- Use during full front brake system overhauls where a new caliper assembly is required.
Benefits on the S8-Z300 Platform
- Maintains the braking characteristics intended by the HENGJIAN factory for the 293.2 cc 2-stroke S8-Z300 enduro.
- Supports controlled deceleration on steep downhills, ruts and technical singletrack.
- Provides a solid base for regular brake maintenance such as pad changes and fluid replacement.
