Athena 144cc Big Bore Cylinder Kit – YZ125 / YZ125X (2005–2021)
- Ships next business day
- 30-day hassle-free returns
- Call us: 541-668-7503
- Secure checkout — Pay in 4 available
✓ Fits:
- 2005-2021 Yamaha YZ125
- 2005-2021 Yamaha YZ125X
✓ Features:
- Boosts displacement from 125 cc → 144 cc
- 14.0:1 compression for explosive low-end and mid-range power
- Race-spec nickel-carbide plating for wear resistance
- CNC-machined head dome ensures uniform combustion
- Designed and tested by Athena Italy for MX and off-road racing
- 58 mm nickel-carbide-plated aluminum cylinder
- Forged high-compression piston (14.0:1 ratio)
✓ What's Included:
- As specified in product title
Ships fast from DuneGoonShop!
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
