ATHENA standard bore 125 Cylinder Kit Ø54 mm for GAS GAS EC 125 2013-2015

On GAS GAS EC 125 from 2013 to 2015, the ATHENA P400155100001 cylinder kit fits in place of the original part. A cylinder that is scored, oval or has a damaged coating loses compression and wears pistons out quickly. Rather than having it rebored and recoated, this kit replaces it with a new, ready-to-fit cylinder.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400155100001
• EAN code: 8050038446464
• Weight: 2.24 kg
• Engine: 2-stroke

When to replace it?

• Cylinder scored or coating flaking after a seizure.
• Ovality or taper out of tolerance when measured with a micrometer.

Measure the cylinder at every piston change. As soon as it falls outside the tolerances in the manual or is scored, it has to be replaced or reconditioned.

Fitting tips

1. Carefully clean the top of the crankcase and cover its opening before removing the old cylinder.
2. Oil the supplied piston and check the ring end gaps before fitting the cylinder.
3. Use new gaskets, either those in the kit or a suitable top end gasket kit, and tighten the cylinder and head in a criss-cross pattern to the manufacturer's torque.
4. Fit a new spark plug and refill the coolant.
5. Break the engine in gently for 3 to 4 hours, as Athena recommends for its cylinder kits.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Piston : ATHENA S4C05400016A · ATHENA S4C04450001 · ATHENA S4C05400016B
• Piston rings : ATHENA
• Top end gasket kit : ATHENA P400485160003 · ATHENA P400485999003
• Cylinder head and dome : ATHENA
• Exhaust power valve parts : ATHENA S410485303011 · ATHENA S410485303027
• Spark plug : NGK 3230 · NGK 3530
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Frequently asked questions

What does the kit contain?
The cylinder, its complete piston and a specific gasket kit.

Which spare parts should I plan for?
For the next service: piston, rings, pin, circlips and top end gaskets in the same size as this cylinder.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
GAS GAS EC 125 2015
GAS GAS EC 125 2014
GAS GAS EC 125 2013