Yamaha YFZ450 Swing Arm 2006-UP
The Lone Star Racing Yamaha YFZ450 Swing Arm (2006-UP) is a purpose-built performance upgrade engineered for riders who demand more from their machine. Constructed from 4130 chromoly steel, this swing arm delivers exceptional strength and rigidity without excessive weight – making it a go-to choice for racers and serious off-road enthusiasts alike. It is designed specifically for 2006 and newer YFZ450 model years, ensuring a precise, fitment-ready installation using your factory components.
Available in stock length or extended versions up to +6 inches, this swing arm gives you real control over your quad’s geometry and handling characteristics. Whether you’re building a dedicated drag machine, a desert sled, or an upgraded trail rider, Lone Star Racing’s YFZ450 swing arm is a proven foundation for your build.
Key Features
- 4130 Chromoly Steel Construction: Superior strength-to-weight ratio compared to stock – built to handle the rigors of racing and hard riding.
- Front Needle Bearings Included: Comes with front needle bearings pre-included for a complete, ready-to-install upgrade.
- Factory Bearing Housing Compatible: Uses the factory bearing housing (or LSR housing) and factory brake plate, keeping installation straightforward and cost-effective.
- Chain Guide Mount Included: Always comes with a chain guide mount compatible with stock or Banshee-style chain guides.
- Optional Skid Plate Mounts: Add skid plate mounts at checkout for added underbelly protection – ideal for trail and desert riding.
- Multiple Length Options: Choose from Stock, +1″, +2″, +4″, or +6″ lengths to fine-tune your wheelbase and handling for your specific riding style.
- 2006-UP YFZ450 Fitment Only: Engineered exclusively for 2006 and newer Yamaha YFZ450 models – not compatible with 2004-05 year builds.
- Stock Chain Slider Compatible: Designed to use the stock chain slider (not included), minimizing additional parts cost.
- Lone Star Racing (LSR) Brand: A trusted name in ATV performance parts, with a long track record in racing and high-performance applications.
Length Options & Which to Choose
- Stock Length: Maintains your YFZ450’s original wheelbase and handling feel. Best for riders who want the strength and quality of chromoly construction without changing their bike’s geometry – ideal for trail riders and those upgrading from a worn or damaged OEM arm.
- +1″: A subtle stretch that slightly improves high-speed stability and rear traction with minimal impact on turning radius. Great for riders wanting a mild improvement for desert or cross-country racing.
- +2″: A popular choice for versatile builds that need improved straight-line stability while still maintaining acceptable cornering. Works well for mixed terrain and light drag applications.
- +4″: A significant stretch suited for dedicated drag racing or riders who prioritize straight-line speed and rear traction over tight cornering. Noticeably changes handling characteristics.
- +6″: Maximum extension for serious drag builds. Greatly increases wheelbase for maximum rear traction and stability at high speeds. Best for experienced builders focused on drag strip performance.
What’s Included
- Lone Star Racing YFZ450 Chromoly Swing Arm (2006-UP)
- Front needle bearings
- Chain guide mount (Banshee-style compatible)
- Skid plate mounts (if selected option)
Why You’ll Love It
Lone Star Racing has been a trusted name in ATV performance for decades, and this swing arm reflects that legacy of quality and durability. The 4130 chromoly construction means you’re getting a part that is built to outlast the stock arm and hold up under the repeated stress of racing, jumps, and hard landings. The flexibility to choose your length – from stock all the way to +6 inches – means this one product can serve a wide range of builds and riding styles, making it one of the most versatile upgrades available for the YFZ450 platform. The thoughtful design retains factory components where it counts, keeping your build clean and your parts cost manageable. Whether you’re chasing podiums at the track or pushing hard on the trail, this swing arm gives you a performance foundation you can count on ride after ride.
Product Specifications
| Brand | Lone Star Racing (LSR) |
|---|---|
| Material | 4130 Chromoly Steel |
| Fitment | Yamaha YFZ450, 2006 and newer |
| Available Lengths | Stock, +1″, +2″, +4″, +6″ |
| Included Hardware | Front needle bearings, chain guide mount |
| Skid Plate Mounts | Optional (select at checkout) |
| Chain Guide Compatibility | Stock or Banshee-style chain guide |
| Chain Slider | Uses stock chain slider (not included) |
| Bearing Housing | Factory bearing housing or LSR housing |
| Brake Plate | Factory brake plate |
FAQ
No – this swing arm is designed exclusively for 2006 and newer Yamaha YFZ450 models. The 2004-05 YFZ450 uses a different design and requires a separate swing arm. Check out the Lone Star Racing YFZ450 Swing Arm for 2004-05 if you have an earlier model.
No, the chain slider is not included. This swing arm is designed to use your stock chain slider, which can be reused from your existing setup or sourced separately.
For dedicated drag racing builds, the +4″ or +6″ options are the most popular choices. The longer wheelbase improves straight-line stability and rear traction at high speeds. The +6″ is the most aggressive option and is best suited for experienced builders with a purpose-built drag quad.
Lead times can vary and may be 10 weeks or more depending on current production schedules. If your project is time-sensitive, we strongly recommend contacting us before ordering to confirm availability or estimated ship date.
Front needle bearings are included with the swing arm. The design is built to reuse your factory bearing housing and factory brake plate, so in most cases you will not need to purchase those separately.
Yes – a “Custom Color” finish option is available at checkout. Simply specify your desired color in the order notes and the team will work with you on the finish. Standard color options like Candy Red, Candy Blue, Gloss Black, Flat Black, and Gloss White are also available.
