Product overview
The HENGJIAN aluminum tailstock S7-Z300-1-18 (18) is an OEM rear frame component engineered for the Hengjian S7 Z300 and S8 Z300 300 cc 2-stroke enduro forms part of the tail section of the chassis, supporting the rear of the frame and helping to keep the back of the motorcycle straight, rigid and correctly aligned under off-road loads.
Key features
- OEM aluminum tail section component matched to the Hengjian S7/S8 Z300 frame geometry.
- Lightweight yet rigid aluminum construction for a strong rear structure with minimal added mass.
- Precisely machined mounting points to follow the original frame layout and tolerances.
- Designed to work with the standard rear bodywork, seat base and associated hardware of the Hengjian Z300 platform.
- Direct replacement part using the factory fastener locations, with no additional modifications to the frame.
Technical details
| Manufacturer | HENGJIAN |
| Part name | Aluminum tailstock (rear frame component) |
| OEM code | S7-Z300-1-18 (18) |
| Vehicle platform | Hengjian S7 Z300 / Hengjian S8 Z300 300 cc 2-stroke enduro motorcycles |
| Component group | Frame — rear tail section |
| Material | Aluminum |
| Position | Rear of main frame, supporting the tail section structure |
| Mounting | Uses original frame mounting points and OEM-type fasteners |
Typical use cases
- Replacement of a bent, cracked or fatigued rear tail section frame component after crashes or heavy off-road use.
- Restoration projects where the original Hengjian S7/S8 Z300 frame needs to be returned to stock geometry and appearance.
- Preparation of a competition or training motorcycle where a straight, rigid rear frame section is important for consistent handling.
- Building a reserve of essential chassis parts for teams or riders operating Hengjian Z300 motorcycles in demanding enduro conditions.
Benefits in off-road use
The aluminum tailstock helps maintain correct chassis alignment at the rear of the motorcycle, which contributes to predictable handling and even load distribution across the frame and aluminum construction offers a balance of strength and low weight, supporting the tail section without unnecessary mass.
Because this part follows the original Hengjian S7/S8 Z300 frame design and mounting pattern, it integrates cleanly with the standard rear bodywork and components, simplifying assembly and ensuring that plastics, seat and ancillary parts sit correctly on the bike.
