Namura Size B Standard Bore Top End Repair Kit for KTM 85 SX 2018-2026 47mm
Namura Size B Standard Bore Top End Repair Kit for KTM 85 SX 2018-2026 47mm
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Top End Repair Kit for KTM 85 SX 2018-2026 47mm
This Namura Size B standard bore top end repair kit is a direct replacement for KTM 85 SX models from 2018 to 2026, featuring a 47mm bore size to restore compression and performance.
Overview
The Namura Size B standard bore top end repair kit is a complete top end rebuild solution designed for KTM 85 SX motorcycles. It includes all necessary components to refresh the cylinder and piston assembly, ensuring reliable power delivery for competitive riding. This kit is specifically engineered for KTM 85 SX 2018-2026 models with 47mm bore.
Built For Performance
- Includes piston, rings, wrist pin, and circlips for full top end rebuild
- Size B standard bore maintains factory 47mm cylinder dimensions
- Precision-machined piston skirt reduces friction and improves throttle response
- High-strength aluminum alloy withstands extreme temperatures and loads
- OEM-spec ring tension ensures consistent compression and oil control
- Namura quality control meets or exceeds original equipment standards
Fits These Machines
- for KTM 85 SX 2018
- for KTM 85 SX 2019
- for KTM 85 SX 2020
- for KTM 85 SX 2021
- for KTM 85 SX 2022
- for KTM 85 SX 2023
- for KTM 85 SX 2024
- for KTM 85 SX 2025
- for KTM 85 SX 2026
On-The-Job Use
- Motocross track riding and racing
- Enduro and off-road competition
- Top end rebuild after 20-30 hours of hard use
- Restoring lost power and compression in high-mileage engines
Specs At A Glance
| Part Number(s) | Namura Size B Top End Kit |
| Bore Diameter | 47mm |
| Piston Size | Size B (standard bore) |
| Material | Aluminum alloy piston with steel rings |
| Application | KTM 85 SX 2018-2026 |
Good To Know
Q: Is this kit compatible with KTM 85 SX models from earlier years? A: This kit is specifically designed for 2018-2026 models with a 47mm bore; earlier models may use a different piston size or configuration, so always verify your model year and bore dimensions.
Q: Do I need any additional parts for installation? A: The kit includes piston, rings, wrist pin, and circlips, but you may need new gaskets, a cylinder honing service, and fresh oil for a complete top end rebuild.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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