CYLINDER FULL KIT BIG BORE 85mm KX250 2025-26, ATHENA P400250100032 300cc (Piston included)
Athena Big Bore Kit 85mm 296cc for KX250 2025-2026. Includes forged piston, rings, pin, and gaskets. Cylinder is high-silicon aluminium alloy with steel bore. Piston is forged aluminium with molybdenum disulfide coating and DLC coated steel pin. MLS head gasket. GET Boost electronic module included for increased power and torque. No crankcase machining required. For race use only.
- SKU
- 56-K315.85.KIT
- Brand
- Athena
- Availability
- In Stock (1)
FULL DESCRIPTION
Athena Extreme Big Bore Kit 300cc for Kawasaki KX 250
Upgrade your Kawasaki KX 250 with Athena's Extreme Big Bore Kit. This kit increases the displacement to 300cc, providing a significant boost in power and torque across the entire power band. It is designed for riders seeking to enhance their motorcycle's performance beyond standard capabilities while preserving the machine's renowned handling and lightness.
Key Features:
- Increases displacement to 300cc for substantial power gains.
- 85 mm bore diameter for maximum displacement increase.
- No crankcase machining is required for installation.
- Features a racing forged piston with a fully open boxed bridged design and anti-friction coating.
- Includes an aluminium alloy cylinder with a durable steel cylinder liner.
- Comes complete with a high-quality forged piston, pin, rings, and all necessary gaskets.
- Equipped with the GET Boost electronic module for optimized performance without ECU modification.
- GET Boost is pre-calibrated specifically for this cylinder kit for easy and safe integration.
- Cylinder utilizes Athena's exclusive co-fusion process for a perfect bond between aluminium and steel, enhancing heat transfer and durability.
- Forged piston crafted from aluminium alloy for strength and lightness, CNC machined for precise tolerances.
- Piston features a molybdenum disulfide coating to reduce friction and noise.
- Aerospace-grade steel pin, coated with DLC, ensures hardness and low friction for exceptional durability.
- Includes a high-quality gasket set with an MLS (Multi-layer Steel) head gasket for optimal and long-lasting sealing.
Technical Specifications:
- Bore Diameter: 85 mm
- Displacement: 296cc
- Cylinder Material: Aluminium alloy with integrated steel liner
- Piston Type: Forged aluminium with molybdenum disulfide coating
- GET Boost Module: Included
Important Notes:
- The cylinder head and base gaskets included are specific to this kit. Always use the specific Athena spare gasket kit when disassembling the cylinder kit; do not use OEM replacement gaskets.
- This kit is intended for race use only and is not suitable for street use.