2021-2026 Honda CRF Conversion Airbox

This complete replacement airbox allows you to cleanly swap a carbureted two-stroke engine into a modern Honda aluminum chassis. CAD-designed specifically for 2021–2026 CRF450R and 2022–2026 CRF250R frames, it corrects the intake geometry, providing the exact clearance and alignment needed to route a two-stroke air boot directly to the carburetor. Whether you are dropping in a 125cc, 250cc, or a massive 500cc big-bore engine, this unit eliminates the headache of melting, hacking, or heat-gunning a stock four-stroke airbox. Key Features: Bolt-On Fitment: Drops directly into the modern CRF twin-spar chassis with zero frame modifications required. OEM Compatibility: Form-fitted to clear the stock rear shock reservoir and integrates perfectly with your factory mudflap and side panels. Rugged Construction: Constructed from high-impact, chemical-resistant Poly Propylene plastic built to withstand fuel, UV light and debris impact. Complete Intake Solution: Includes a brand-new air filter assembly to maximize airflow for your new two-stroke powerplant Whats Included? One piece airbox with rubber intake boot complete air filter assembly with pre-oiled air filter (No Toil #1252) Intake Boot clamp Fitment: Honda CRF450R / RX / WE: 2021–2026 Honda CRF250R / RX: 2022–2026