Epitomie Fitness Sonic Boom M2 High Speed Jump Rope
- Item Length: 120 inches
- Material: Alloy Steel
- Grip Material: Silicone
- Handle Material: Silicone
Last refreshed Jun 29, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B074SFXC3CModel: Sonic Boom M2Category: Jump Ropes
Overview
A weighted, high-speed jump rope with a screw-free self-locking length adjustment, silicone-grip handles and two interchangeable speed-rope cables, built for double-unders and fast cardio work.
The self-locking design is the rope's main pitch, swapping the small set screws found on many speed ropes for a tool-free length adjustment.
- Self-locking, screw-free length adjustment
- 360 degree spin with silicone grip handles
- Includes two speed-rope cables
- Weighted handle design
Who it's for
Suited to crossfit-style athletes doing double-unders and high-speed cardio who want a tool-free length adjustment.
Pros and cons
- Tool-free, screw-free length adjustment via a self-locking mechanism
- Smooth, fast 360-degree spin from internal bearings
- Silicone grip handles that don't compress or absorb sweat like foam
- Comes with two cable lengths for different fits
- Handle shape caused mild hand discomfort after several minutes for one reviewer
- Cables reported snapping at the handles after about ten weeks of daily use
- Lock mechanism reportedly slipped during aggressive double-under sessions for one buyer
Specifications
| Brand | Epitomie Fitness |
|---|---|
| Model | Sonic Boom M2 |
| Dimensions & fit | |
| Item Length | 120 incheshigher than 67% of 37 jump ropes |
| Handle Diameter | 1 inch |
| Construction & materials | |
| Material | Alloy Steel |
| Grip Material | Silicone |
| Handle Material | Silicone |
| Other details | |
| Target Audience | Adult |
| Recommended Uses For Product | Exercise And Fitness, Speed And Endurance |
| Other Special Features of the Product | Adjustable Length, Slip Resistant |
Closest rivals on specs
Compare all side by side
Frequently asked questions
Does this rope require tools to adjust the length?
No, it uses a patent-pending self-locking, screw-free mechanism to adjust length by hand.