PISTON KIT B 77MM SUZUKI RM-Z 250 10-25, ATHENA S5F07700004B
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Forged piston kit B 77mm for Athena and OE cylinders. This Athena piston is manufactured using reverse extrusion and cutting-edge CNC machining tools, ensuring dimensional tolerances of less than 0.01 mm. Constructed from a special high-performance aluminum alloy with high silicon content, these pistons offer the same reliability as OE pistons with increased resistance and excellent performance. The smooth profile promotes regular flow and perfect flame propagation. Some piston skirts feature a molybdenum disulfide coating applied by screen printing to reduce friction, enhancing performance and durability. Each piston is engineered in Italy and tested on engine dynamometer benches and on track. The kit includes the piston, pin, circlips, and piston rings, all of which are replaceable and interchangeable. Piston rings are produced in Japan with wear-resistant coatings for increased retention and durability. Technical features: Big End Pin Diameter (mm) 16x9x40.1, Bore Diameter (mm) 76.96, Compression Height (mm) 19.70, Compression Ratio 13.4:1, Displacement (cc) 250, Net Weight (Kg) 0.18, Number Of Segments 2, Piston Pin Type Biconical, Piston Type Forged.
- SKU
- 56-W951.B.ATH
- Brand
- Athena
- Availability
- In Stock (5)
Fitments (16)
| Make | Model | Year |
|---|---|---|
| SUZUKI | RM-Z 250 | 2010 |
| SUZUKI | RM-Z 250 | 2011 |
| SUZUKI | RM-Z 250 | 2012 |
| SUZUKI | RM-Z 250 | 2013 |
| SUZUKI | RM-Z 250 | 2014 |
| SUZUKI | RM-Z 250 | 2015 |
| SUZUKI | RM-Z 250 | 2016 |
| SUZUKI | RM-Z 250 | 2017 |
| SUZUKI | RM-Z 250 | 2018 |
| SUZUKI | RM-Z 250 | 2019 |
| SUZUKI | RM-Z 250 | 2020 |
| SUZUKI | RM-Z 250 | 2021 |
| SUZUKI | RM-Z 250 | 2022 |
| SUZUKI | RM-Z 250 | 2023 |
| SUZUKI | RM-Z 250 | 2024 |
| SUZUKI | RM-Z 250 | 2025 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77.00mm
- Variant Id
- 289765
FULL DESCRIPTION
Athena Forged Piston Kit B - 77mm Bore
This Athena Piston Kit is engineered for high-performance off-road motorcycles, offering a durable and reliable upgrade for your engine. Crafted using a specialized high-silicon aluminum alloy and advanced reverse extrusion techniques, these pistons are built to meet or exceed Original Equipment (OE) standards.
Each piston is manufactured with precision CNC machining, ensuring dimensional tolerances of less than 0.01 mm for optimal fit and function. The smooth piston profile promotes consistent airflow and efficient flame propagation, contributing to improved combustion. Some piston skirts feature a molybdenum disulfide coating, applied via screen printing, to further reduce friction, enhance performance, and extend durability.
Athena's commitment to quality is evident in their rigorous testing process, including engine dynamometer and track validation, to ensure performance in the most demanding conditions. The included piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) for increased retention and longevity, adapting perfectly to the cylinder liner even under low tangential load.
This kit includes the piston, pin, circlips, and piston rings, with all components being replaceable and interchangeable.
Key Features:
- Forged Piston Type: Constructed from a high-performance aluminum alloy for superior strength and resistance.
- Precision Machining: CNC machined to tight tolerances for optimal performance and fit.
- Reduced Friction: Special alloy and optional skirt coatings minimize friction for enhanced power and durability.
- High-Quality Rings: Japanese-made rings with wear-resistant coatings ensure longevity and optimal sealing.
- Complete Kit: Includes piston, pin, circlips, and piston rings.
- Engineered in Italy: Designed and tested by Athena's R&D department for validated performance.
Technical Specifications:
- Bore Diameter: 76.96 mm
- Compression Height: 19.70 mm
- Compression Ratio: 13.4:1
- Displacement: 250 cc
- Number of Piston Segments: 2
- Piston Pin Type: Biconical
- Big End Pin Diameter: 16x9x40.1 mm
- Net Weight: 0.18 Kg
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
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