Bronco 2‑Stage Foam Air Filter for Honda ATC200X / ATC250R / ATC250SX / TRX250 / TRX250R (1983‑1987)

OVERVIEW

The Bronco 2‑Stage Foam Air Filter provides robust engine protection for aging Honda sport ATVs by efficiently trapping dust and grit while preserving unrestricted airflow. Built with a durable multi‑layer synthetic foam core and paired with a resilient rubber sealing gasket, this reusable element replaces worn stock filters without compromising engine breathing. It is engineered to drop directly into the intake assembly of 1983 to 1987 Honda ATC and TRX platforms, restoring reliable lubrication support through balanced combustion management.

ENGINEERING & PERFORMANCE

The dual‑layer foam construction functions as a dense yet porous barrier, trapping fine particles while allowing pressurized air to reach the intake manifold without resistance. This synthetic media endures repeated cleaning intervals and harsh moisture conditions, retaining its structural integrity far longer than disposable paper elements. A heat-stable rubber gasket holds firm against thermal expansion and chassis vibration, preventing unmetered air leaks that can lean out the mixture during sustained throttle use.

KEY FEATURES

• OEM-style 2-stage foam air filter
• Dual-layer foam for maximum dirt-holding capacity
• Strong airflow for consistent engine performance
• Superlative filtration for sport and performance ATVs
• Replacement for Honda OEM #17254-965-003
• Replacement for Honda OEM #17210-HA8-770
• Replacement for UNI NU-4063ST
• Reusable design compatible with standard cleaning solvents
• Matched OEM dimensions for easy drop-in installation

TECHNICAL SPECIFICATIONS

• Brand: Bronco
• Part Name: 2‑Stage Foam Air Filter
• Filter Type: Foam / Reusable
• Material: Dual-layer synthetic foam
• Supported Years: 1983–1987
• Compatible Trims: ATC200X, ATC250R, ATC250SX, TRX250, TRX250R

FITMENT

• Honda ATC200X (1983–1987)
• Honda ATC250R (1983–1986)
• Honda ATC250SX (1985–1987)
• Honda TRX250 (1985–1987)
• Honda TRX250R (1985–1987)

WHY RIDERS CHOOSE THIS

Riders favor this 2‑stage foam filter because it bridges the gap between delicate stock components and heavy-duty aftermarket upgrades, delivering reliable filtration without choking the factory carburetor tuning. The deep foam medium holds significantly more dirt volume before saturation, which extends service intervals during dusty trail runs or muddy race weekends. By returning proper airflow dynamics and keeping the gasket seal intact under stress, this filter ensures vintage engines breathe freely and run smoother over time. Its direct-fit geometry means riders spend less time modifying intakes and more time focusing on performance adjustments.