JAVIK Upper & Lower Ball Joint Kit for Honda FourTrax 300 / Foreman 400 – 4‑Piece OE‑Fit Iron with Rubber Boots

JAVIK's four-piece upper and lower ball joint kit replaces worn steering pivots on Honda FourTrax 300 and Foreman 400 ATVs to restore tight, predictable front-end movement. This kit contains four complete ball joints plus the hardware needed to swap out the upper and lower joints on compatible Honda TRX models. Engineered from iron and durable rubber components to match OE fit, the set covers common wear points on 2x4 and 4x4 FourTrax/Foreman ATVs from late 1980s through early 2000s. Each kit includes lock nuts, split pins, and circlips so you have everything required for a straightforward replacement without piecing together parts.

Which Honda ATVs will these ball joints fit?

The JAVIK kit is sized and specified for a range of Honda FourTrax and Foreman models. Check the model years and OEM numbers to confirm compatibility before ordering.

• Foreman 400 TRX400: 1995–2003
• FourTrax 300 TRX300 2x4: 1993–2000
• FourTrax 300 TRX300FW 4x4: 1988–2000
• Cross-reference OEM numbers 51355-HP5-601, 51355-HC5-004, 51355-HM5-931

What materials and dimensions are used in these replacements?

The ball joints combine an iron body with a resilient rubber boot to protect the internal bearing against dirt and moisture. The provided size helps ensure an OE-like fit so steering geometry is maintained after installation.

• Body material: iron for structural strength
• Seal material: rubber boot to guard the joint
• Nominal product size: 66 mm by 32 mm (body/seat dimensions)
• Four joints included: upper and lower coverage for one ATV

What hardware comes with the kit and how complete is it?

JAVIK supplies the fastening components required to secure each ball joint, so you won't need to source extra small parts. The package is intended to provide a complete swap for both front suspension sides.

• Ball Joint x 4 (upper and lower positions covered)
• Lock Nut x 4 for proper torque retention
• Split Pin x 4 to secure castle nuts where applicable
• Circlip x 4 for retaining the joint in its housing when required

How does installing this kit affect steering feel and maintenance?

Replacing tired ball joints reduces play in the steering and improves alignment stability, which helps the ATV track truer and feel more predictable at speed. While this kit restores mechanical integrity, periodic inspection and lubrication (where applicable) will extend service life.

• Reduces steering lash and wandering from worn joints
• Helps preserve tire wear by maintaining correct geometry
• Rubber boots limit contamination to prolong joint life
• Regular inspection recommended after heavy use or water crossings

Who is this for? This JAVIK ball joint kit is aimed at ATV owners, mechanics, and restoration enthusiasts working on Honda FourTrax 300 and Foreman 400 models from the late 1980s to early 2000s who need a complete upper-and-lower front-end replacement. If your ATV shows steering play, uneven tire wear, or clunking from the front suspension, this kit provides the matching OEM numbers, necessary hardware, and a direct-fit option to restore safer handling. JAVIK offers 24-hour customer service and a one-year product service for added assurance with your replacement parts.

FAQ

Q: Do these ball joints match Honda OEM numbers?

A: Yes. This kit corresponds to OEM 51355-HP5-601, 51355-HC5-004, and 51355-HM5-931 for the listed models.

Q: Will the kit include everything needed to replace both sides?

A: Yes. The package contains four ball joints plus lock nuts, split pins, and circlips to complete both upper and lower replacements.