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Welcome to Golden Designs

Since 2007 we have specialized in well-being products for the whole family.

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Phone: 1-909-212-5555
Address: 3550 Jurupa Street Building B Ontario, CA 91761

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Dynamic R1 Pro® SPK-21S Sport Fitness Cycle


The Dynamic R1 Pro® SPK-21 Spin Cycle is the bike of choice designed for beginners as well as the most physically fit riders. This space-saving exercise bike delivers an intense and concentrated workout session with the convenience of indoor cycling. The Dynamic R1 Pro® SPK-21 Spin Cycle is durable, tough, and designed with a heavy duty elliptical-tube frame for endurance riding with a streamline ergonomic design. Eight adjustable gears of tension allows the user to burn calories and increase muscle tone simultaneously while its strong platform offers a club-quality workout and a real bike feel. In addition, the Dynamic R1 Pro® SPK-21 Spin Cycle features a multiple position adjustable seat that can be easily removed or changed to the biker’s own bike seat if preferred. The Dynamic R1 Pro® SPK-21 Spin Cycle will deliver a rigorous and sound riding experience sure to thrill beginners as well as enthusiasts.


  • 44.1 LB Laser Precision Balanced Chrome Plated Flywheel:

44.1 LB Laser Precision Balanced Chrome Plated Flywheel creates sustained momentum while supporting pedal movement and motion.

  • 2.0 MM Elliptic Steel Tubing Structure:

Elliptic Steel Tubing Structure is strong, durable, and rigid with style and comfort all built right in.

  • Commercial Grade Dual Fixed Wheel and 5PK Belt Drive System:

Commercial Grade Dual Fixed Wheel and 5PK Belt Drive System delivers a smooth and comfortable ride.

  • Heat Treated Axle Assembly:

Heat Treated Axle Assembly provides strength for long-time use and performance.

  • 8 Speed Sport Shift for Tension Gear Control:

8 Speed Sport Shift for Tension Gear Control gives a range and feel of terrain changes from uphill and downhill to a level and steady road.

  • Ergonomically Correct Design for Optimal Riding Performance:

Ergonomically Correct Design is designed to maximize comfort for all riding positions.

  • Dual Sided Pedals with SPD and Clips:

Dual Sided Pedals with SPD and Clips give the rider a choice of riding with an SPD cleat or riding with regular shoes.

  • Aerodynamic Multi-Positioning Handlebar Design:

Our Aerodynamic Multi-Position Handlebar Design will help the rider find the right position suitable for his/her workout with Tension Release for adjustable front/rear/up/down positional settings.

  • Handle Bar with Elbow Foam Support Pads and Multi-Position Settings:

The Elbow Foam Support Pads allow you to lean forward on the Handle Bar during your workout and adjust to different positions to minimize fatigue. Chrome Plated Handlebar

  • Post and Saddle Post:

Beautiful chromed post come with full and half positional settings giving you the ease of positioning both the handlebar and saddle to positions that are right for your body type.

  • 18” Front Cross Bar and 25” Rear Floor Cross Bar:

18” Front Cross Bar comes with a built in handle and the 25” Rear Floor Cross Bar is equipped with wheels for convenient mobility, allowing you to easily move your spin cycle from room to room.

  • Adjustable Designed Saddle with Tension Release:

Adjusting the seat position forward, backward, up, or down can have a tremendous effect on your riding experience and will help personalize your workout to fit your particular anatomy.

  • Interchangeable Saddle:

The Pro SPK-21 Spin Cycle gives you the option of equipping your bike with your own saddle from your personal racing bike.

  • Water Bottle Carrier:

Standard Water Bottle Carrier gives the rider the freedom of having a water bottle within reach for non-stop hydration.


Specifications :

Weight limit: 285 lbs

Assembled dimensions: L x W x H: 63″ x 25.6″ x 50.4″)

Assembled weight: 132.3 lbs   –

Lifetime Frame


Standard shipping via UPS Ground. Estimated delivery time is approximately 5 – 7 business days
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