SizeGenetics Ultimate System vs Peyronie's Edition: Which Kit Fits You?
By Penile traction device for Length & Curvature | Published: 2026-11-02
Category: Comparisons
Both SizeGenetics kits cost the same and share FDA registration, but they're built for different goals. Here's how to choose between length-focused and curvature-focused traction.
Quick answer
Choose the SizeGenetics Ultimate System if your main goal is length and you want the fullest accessory kit. Choose the Peyronie's Edition if your priority is correcting penile curvature, since it's purpose-built for directional traction.
Same price, same core device—different focus
Both kits are listed at USD 249.98 (compared with USD 499.95) and both use an FDA-registered medical traction device. The real difference is what each kit is designed to help you achieve. The Ultimate System bundles every comfort accessory and the full elongation-bar range for progressive length work. The Peyronie's Edition is built specifically for men correcting curvature and Peyronie's disease, applying gentle, measured, directional tension to gradually straighten the penis.
The trade-off: accessories vs. curvature-specific design
If you buy the Ultimate System hoping it will also straighten a curve, you're relying on a kit that isn't marketed for that purpose. If you buy the Peyronie's Edition purely for length, you may miss the broader accessory set and elongation bars included in the Ultimate System. Neither kit is a compromise on safety—both are FDA-registered—but each is optimized for a different outcome.
The Ultimate System also includes a progressive 6-week plan, which suits men who want structure for length gains. The Peyronie's Edition carries a 6-month money-back guarantee, which gives you a longer window to judge curvature progress.
What the shared FDA registration means for your choice
Both devices are FDA-registered medical traction devices, so the regulatory baseline is the same. That means your decision should hinge on your goal—length versus curvature—rather than on safety certification. If you have Peyronie's disease or a noticeable curve, the curvature-specific design of the Peyronie's Edition is the more logical starting point.
Decision rules for each kit
- If length is your primary goal: Pick the Ultimate System. It includes the full elongation-bar range and a 6-week progressive plan, plus every comfort accessory. Check that you're willing to follow the 6-week plan consistently; the accessories only help if you wear the device as directed.
- If curvature or Peyronie's is your concern: Pick the Peyronie's Edition. It's designed for directional tension to gradually straighten the penis, and the 6-month guarantee gives you a realistic evaluation window. Curvature correction is gradual—plan to measure your curve before starting so you can track changes objectively.
- If you're undecided: Ask yourself which outcome you'd be more disappointed to miss: extra length or a straighter erection. That answer points to the right kit. Don't buy both at once; start with the kit that matches your main goal and reassess after the guarantee period.
Key facts at a glance
- Penile Traction Device Kit — SizeGenetics® Ultimate System (FDA-Registered & CE-Certified): Bundles every comfort accessory, the full elongation-bar range, and a progressive 6-week plan. You get a complete length-focused system with a structured plan, so you're less likely to need add-ons later.
Penile Traction Device Kit — SizeGenetics® Ultimate System (FDA-Registered & CE-Certified) - SizeGenetics® Penile Curvature & Peyronie's Edition - At-Home Medical Traction Device (FDA-Registered): Purpose-built for curvature and Peyronie's disease, with a 6-month money-back guarantee. The longer guarantee gives you more time to assess straightening progress, and the design targets directional tension rather than length.
SizeGenetics® Penile Curvature & Peyronie's Edition - At-Home Medical Traction Device (FDA-Registered)
Which kit is right for you?
Best for
- Men focused on length who want a complete accessory kit and a structured plan
- First-time traction users who want the full SizeGenetics system in one purchase
Not for
- Men whose main concern is penile curvature or Peyronie's disease—choose the Peyronie's Edition instead
- Buyers who want a curvature-specific design with a longer money-back window
