ATHENA Cylinder Kit Bolt Kit for ATHENA cylinder kit for FANTIC XE 125, XX 125 and YAMAHA YZ 125 2022-2026

The ATHENA P400485150007 cylinder kit bolt kit is designed for FANTIC XE 125, XX 125 and YAMAHA YZ 125 from 2022 to 2026. This kit brings together the bolts, studs or nuts that hold the cylinder and cylinder head of an Athena cylinder kit. New hardware ensures accurate, even tightening, which the top end needs to seal properly.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400485150007
• EAN code: 8050506054573
• Weight: 130 g
• Engine: 2-stroke

When to replace it?

• Damaged thread or stretched bolt after several tightenings.
• Rusty bolt or nut, marked head.
• Hardware lost or mismatched during a strip-down.

When fitting a cylinder kit, or as soon as a bolt or stud is damaged: a stretched bolt no longer holds its torque.

Fitting tips

1. Clean the threads in the crankcase and cylinder before assembly.
2. Lightly oil the threads, unless the manufacturer says otherwise.
3. Tighten in a criss-cross pattern, in several stages, to the torque given in the Athena instructions or the workshop manual.
4. Reassemble with a new top end gasket kit.

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

• ATHENA cylinder kit : ATHENA P400485100100 · ATHENA P400485100102 · ATHENA P400485100101
• Piston : ATHENA S4C05400024 · ATHENA S4C05400025 · ATHENA S4C05800003
• Top end gasket kit : ATHENA
• Cylinder head and dome : ATHENA P400485200002 · ATHENA P400485200005 · ATHENA S410485308048
• Exhaust power valve parts : ATHENA P400485303001 · ATHENA P400485303002

Frequently asked questions

Which cylinder is this hardware for?
For the Athena cylinder kit shown in the compatibility list. Compare with your original hardware if in doubt.

Compatibility

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

Fits:
FANTIC XE 125 2026
FANTIC XE 125 2025
FANTIC XE 125 2024
FANTIC XE 125 2023
FANTIC XX 125 2026
FANTIC XX 125 2025
FANTIC XX 125 2024
FANTIC XX 125 2023
FANTIC XX 125 2022
YAMAHA YZ 125 2026
YAMAHA YZ 125 2025
YAMAHA YZ 125 2024
YAMAHA YZ 125 2023
YAMAHA YZ 125 2022