Speed Dealer Customs Swingarm for 2007-2017 Harley Dyna

Product Description

Speed Dealer Customs Billet Aluminum Swingarm - Harley-Davidson Dyna 2007-2017

Transform your Dyna's handling and aesthetics with the Speed Dealer Customs Billet Aluminum Swingarm—a no-compromise upgrade that brings bagger-level engineering to the legendary Dyna platform. Machined entirely from solid billet aluminum with zero welding, this swingarm eliminates the limitations of the factory cast unit while adding professional-grade spherical rod ends for superior articulation and reduced bind. Unlike the stock Dyna setup, Speed Dealer Customs engineers this swingarm with 1-3/4" OD x 1" wide American-made spherical rod ends—the same high-performance components used in their Bagger swingarm systems. Every component is precision CNC-machined from premium domestic materials at Speed Dealer Customs' facility, with the main arms carved from billet aluminum blocks and the axle turned from chrome-moly tubing for race-grade strength. The integrated jack spool mounts transform maintenance from a struggle into a simple lift operation, while stainless steel hardware with safety wire provisions ensures nothing backs off through aggressive riding or track sessions. For Dyna enthusiasts building performance street fighters, show bikes, or corner-carving weapons, this swingarm delivers the strength, precision, and jaw-dropping visual impact that takes your build to the next level.

Fitment

• 2007-2017 Harley-Davidson Dyna Models (All Variants)
• FXDB Street Bob
• FXDC Super Glide Custom
• FXDF Fat Bob
• FXDL Low Rider
• FXDWG Wide Glide
• FLD Switchback
• FXDLS Low Rider S
• All Other Dyna Variants 2007-2017
• NOTE: 2007 models require modification to transmission tab - contact Speed Dealer Customs for instructions before ordering
• NOTE: If using passenger peg mounts, modification of peg mounts will be required - contact Speed Dealer Customs for details
• This is an aftermarket performance swingarm, not an OEM replacement - modifications or additional parts may be required
• Professional installation strongly recommended

Features & Benefits

• Solid Billet Aluminum Construction - Machined from domestic billet aluminum blocks with no welding, eliminating weak points and delivering consistent grain structure throughout
• 1-3/4" OD x 1" Wide Spherical Rod Ends - American-made spherical bearings identical to bagger swingarm setup, providing superior articulation and reduced bind compared to stock Dyna bushings
• Chrome-Moly Axle - Precision-turned from high-strength chrome-moly tubing for maximum rigidity under hard cornering loads
• 8630 Interference Thread Studs - High-tensile strength studs with interference fit threads prevent loosening under the Dyna's vibration characteristics
• Stainless Steel Hardware Throughout - Complete stainless fastener package with integrated safety wire features on nuts and axle slider for race-proven security
• CNC-Machined Stainless Axle Nuts - Precision-machined from stainless steel for perfect thread engagement and long-term corrosion resistance
• Integrated Jack Spools - Built-in spool mounts enable use of rear paddock stands for effortless wheel removal and maintenance
• In-House Anodizing Available - Custom color matching performed at Speed Dealer Customs' facility for perfect integration with your build
• Lightweight Yet Strong - At 16 lbs, reduces unsprung weight while maintaining superior strength compared to stock cast swingarm
• Multiple Finish Options - Available in full machined finish, black anodized, or custom colors to match your Dyna's aesthetic
• Made in USA - 100% designed, engineered, and manufactured at Speed Dealer Customs with American materials and craftsmanship
• Show-Quality Machining - Every surface is precision CNC-machined for flawless appearance and exact tolerances worthy of show builds
• Serviceable Design - Unlike welded construction, billet allows for future modifications, bearing replacement, or repairs if needed
• Safety Wire Provisions - Professional-grade safety wire features on nuts and axle slider prevent component loosening during aggressive riding

Why Upgrade?

The Dyna platform has earned cult status for its raw handling potential and builder-friendly design—but the factory cast swingarm holds it back. The Speed Dealer Customs Billet Swingarm unlocks that potential completely. By machining the entire swingarm from solid billet aluminum, Speed Dealer Customs eliminates the porosity, inconsistency, and structural limitations of cast construction. There are no welds to crack, no joints to fail—just continuous grain structure throughout the component, resulting in a swingarm that's both lighter and stronger than stock. The game-changer is the spherical rod end upgrade: Speed Dealer Customs engineers this swingarm with 1-3/4" OD x 1" wide American-made spherical bearings—the same high-performance components used in their Bagger swingarm systems. These replace the stock Dyna's simple bushings, providing superior articulation, reduced bind, and more predictable suspension action through the full range of travel. The result is sharper turn-in response, more consistent chassis behavior over bumps, and handling that feels telepathic compared to the stock setup. At 16 lbs, you're shedding weight from the worst possible location (unsprung mass), allowing your suspension to work more effectively and delivering the quick direction changes that make Dynas so addictive in the twisties. The chrome-moly axle and 8630 interference thread studs are engineered for serious use—whether you're carving canyons, running track days, or building a street weapon, this swingarm maintains perfect wheel alignment under loads that would flex stock components. The integrated jack spool mounts are essential for Dyna owners who actually ride: flip it up on a rear stand in seconds without struggling with improvised lifting points or risking damage to freshly powdercoated frames. For builders and show bike owners, the visual impact is extraordinary—the precision machining, clean lines, and optional custom anodizing create a focal point that commands attention at bike nights and shows. Speed Dealer Customs' in-house anodizing means you can color-match this swingarm to your wheels, frame accents, or engine components for a cohesive, professional appearance. The stainless hardware with safety wire provisions isn't just aesthetic—it's race-proven security ensuring nothing backs off when you're pushing the Dyna's limits. Installation requires professional-level mechanical skills: 2007 models need a modification to the transmission tab (contact Speed Dealer Customs for instructions), and if you're running passenger peg mounts, those will need modification as well. The brake caliper bracket (sold separately) mounts the caliper above the swingarm only—plan your wheel and rotor selection accordingly. The approximately 6-week lead time reflects the made-to-order nature of Speed Dealer Customs components—your swingarm is built specifically for you with individual attention and quality control. Whether you're building a stripped-down street tracker, a show-winning custom, or a performance street fighter that carves corners like it's on rails, the Speed Dealer Customs Billet Swingarm delivers the strength, precision, and visual impact that separates elite Dyna builds from the ordinary. This is the swingarm that transforms your Dyna from good to exceptional.

Note: Part Number SD-4789. This is an aftermarket performance swingarm requiring professional installation—not a direct OEM replacement. Modifications or additional parts may be required to complete installation. 2007 models require modification to transmission tab—contact Speed Dealer Customs before ordering for detailed instructions. If using passenger peg mounts, modification of peg mounts will be required—contact Speed Dealer Customs for guidance. Requires 1/2-20 thread bolts for shock mounts (not included) and M10 x 1.25 pitch bolts for brake caliper bracket (not included). Brake caliper brackets sold separately—available in multiple anodized colors to match your swingarm finish. IMPORTANT: Dyna caliper brackets mount caliper above swingarm only. Weight: 16 lbs. Jack spool mounts included for rear stand use. Features 1-3/4" OD x 1" wide American-made spherical rod ends (same as bagger swingarm system). Stainless steel hardware with safety wire features on nuts and axle slider included. Axle is chrome-moly tubing, studs are 8630 steel with interference threads, axle nuts are CNC-machined stainless steel. Multiple finish options available including full machined, black anodized, or custom colors. Custom anodizing done in-house at Speed Dealer Customs. Current lead time approximately 6 weeks not including shipping. Ships with signature required. Professional installation by experienced and certified technicians strongly recommended—periodic maintenance may be required. Installer is responsible for ensuring all fasteners are properly torqued before operation. Made in USA with domestic materials. See Speed Dealer Customs swingarm policies for complete shipping and warranty information.