RANSOTO Front Upper & Lower Ball Joint Kit for Honda Rancher 350/420 & Foreman 500 — 4‑Piece Direct‑Fit with Hardware

RANSOTO front upper and lower ball joints are a complete 4-piece suspension replacement kit engineered to restore steering precision for Honda Rancher 350/420 and Foreman 500 ATVs.

These RANSOTO ball joints are built as direct-fit replacements for common Honda OEM numbers (51375-HP5-601, 51355-HP5-601 and equivalents) and designed to match original dimensions and mounting points so installation is straightforward. The kit includes two upper and two lower joints plus all necessary hardware, making it a one-stop solution when front-end play, clunking, or uneven tire wear indicate worn joints. Materials and sealing focus on durability for off-road conditions, while compatibility covers a wide range of Rancher and Foreman model years and sub-models.

How do these ball joints improve steering and ride feel?

Replacing worn ball joints restores factory steering geometry and eliminates slack in the front suspension. That tightens steering response, reduces wandering at speed, and helps tires track more evenly across rough terrain.

• Restores correct ball stud-to-control-arm fit and preload.
• Reduces play that causes clunking and loose steering.
• Helps prevent premature, uneven tire wear by maintaining alignment geometry.

Which Honda models and years will these parts fit?

This kit fits a range of Honda ATVs: Rancher 350 TRX350 (2004–2006), Rancher 420 TRX420 (2007–2013), and Foreman 500 TRX500 (2005–2011). It covers common sub-models such as FE, FM, TE, TM, and ES, offering broad coverage for owners replacing front suspension components.

• Direct-fit for specified model years — no modification required.
• Compatible with OEM part numbers listed for easy cross-reference.
• Includes both upper and lower joints to correct the entire front end.

What materials and features make these ball joints durable off-road?

RANSOTO manufactures these joints from high-strength steel with heat-treated ball studs to resist wear under load. Each joint uses premium chloroprene rubber boots to seal out water, mud, and sand, and ships with new castle nuts, cotter pins, and snap rings for a complete, corrosion-resistant assembly.

• Heat-treated ball studs for long-lasting contact surfaces.
• Chloroprene boots to prevent contamination and internal corrosion.
• Complete install hardware included to restore factory security and alignment.

How difficult is installation and what’s included in the kit?

Installation is typically straightforward for anyone with basic mechanical skills and common tools; some models may require a press or ball joint separator. RANSOTO supplies two front upper and two front lower ball joints plus castle nuts, cotter pins, and snap rings so you can finish one front-end rebuild without sourcing additional parts.

• 4-piece set: 2 upper + 2 lower ball joints included.
• Every joint includes necessary nuts, cotter pins, and snap rings.
• Direct replacement sizing matches Honda OEM specifications for easier fitment.

Who is this for: This RANSOTO kit is aimed at ATV owners, mechanics, and repair shops servicing Honda Rancher and Foreman models that show front-end play, steering looseness, or abnormal tire wear. It’s ideal for riders who need a reliable, OE-form replacement set that restores steering precision and withstands muddy, wet, or sandy trail conditions without sourcing multiple individual components.