Subframe – Kawasaki KX250F (2020–2024) / KX450F (2019–2023)

Upgrade your bike with the Kawasaki KX250F 2020-2024 KX450F 2019-2023 subframe (SKU 02-4234) from AC Racing—a direct-fit replacement designed to restore OEM alignment and deliver race-ready durability. If your stock rear subframe is bent, twisted, or cracked from a crash or hard landing, this replacement helps bring your bike back to proper fitment, clean body panel alignment, and confident handling.

Made in the USA using U.S. materials and expert craftsmanship, this KX250F/KX450F subframe is built for riders who demand strength without compromise. It’s heli arc welded for maximum durability and a true handcrafted look, and constructed from thick wall 3/4" aluminum tubing (.125 wall) to increase rigidity and resist fatigue under vibration, impacts, and repeated hard use.

For a secure, reliable bolt-on fit, all mounting points are CNC machined from billet aluminum, helping ensure consistent alignment where it matters most—seat, side panels, and rear fender mounting. Each subframe is also tumble finished with ceramic spheres for a clean, uniform finish that looks as good as it performs.

Why you’ll want it

• Direct-fit rear subframe replacement for Kawasaki motocross models

• Restores proper alignment for the seat, plastics, and rear fender

• Made in the USA with performance-focused construction

• Heli arc welded for strength and a handcrafted look

• 3/4" thick wall aluminum tubing (.125 wall) for enhanced rigidity and longevity

• CNC-machined billet aluminum mounts for dependable fitment

• Ceramic-sphere tumble finish for a clean, uniform appearance

Fitment

• Kawasaki KX250F: 2020–2024

• Kawasaki KX450F: 2019–2023

Questions about fitment before ordering? Contact AC Racing at sales1acracing@gmail.com or (951) 245-4040 (Mon–Fri, 12 PM–6 PM EST).