Tackle the toughest of terrain in complete comfort with the Rinsten Spring Under Seat Shock Absorber. Whether you’re cycling across the city or taking it backcountry on the trails, the Rinsten Spring has got your back…and your knees.



Patented Bicycle Under Seat Shock Absorber by Rinsten Spring

Whilst no one can deny the health benefits of cycling, this great form of exercise can come with a price, unfortunately. For years, cyclists riding a bike without suspension have felt every lump and every bump in the road, with the vibrations from these traveling up the body and causing pain to the rider’s back and knees. The Rinsten Spring Under Seat Shock Absorber changes this though and takes on the impact so that your body doesn’t have to.

Based on “The impact of vibration on comfort and bodily stress while cycling” research from Professor John Parkin, Ph.D. of The University of the West of England, the Rinsten Spring Under Seat Shock Absorber is here to provide you with comfort and stop your bike from being a boneshaker.

As part of his research, Professor John Parkin found that in almost one hour of cycling, the rider is exposed to vibration comparable to that of a tractor operator during half of a day of fieldwork. This is where the Rinsten Spring Under Seat Absorber comes in, it cushions impacts and vibrations, whilst adjusting to your pelvis bending during your ride.

Thanks to the adjustable springs in the Rinsten Spring Under Seat Shock Absorber, it will ensure your back doesn’t move out of place whilst cycling, which is often what causes injuries.

Adjustable, the springs can be adjusted to your desired hardness – this could be based on your weight, riding style, or the terrain you cycle across. This makes the Rinsten Spring Under Seat Shock Absorber suitable for both road cyclists and mountain bikers alike.

Making your ride smooth and comfortable, will minimize the vibrations felt whatever you’re riding across – uneven terrain, mud, gravel, and potholes will no longer be an issue.

With a simple but incredibly effective design, the Rinsten Spring will provide you with three directions of suspension – the spring not only travels up and down but also rocks side to side as you pedal. If you find yourself aching and injured after cycling for prolonged periods, the Rinsten Spring is for you.

Very easy to install, the Rinsten Spring can be fitted to almost any bike, and simply attaches between the seat post and the saddle. Please note, this product does not come with a user manual for instructions.

Designed in the USA and manufactured in China, the Rinsten Spring is patented in the USA, China, Australia, and throughout Europe (EU Patent D093656). 100% authentic, this is the innovative product that has been a revolution in the cycling world. Beware of cheap copies that are not backed up by research, technology, and testing which the Rinsten Spring has.

  • Easy to install and adjust
  • Weight: 337g
  • Suitable for riders of all ages
  • Suitable for riders weighing from 10kg to 150kg
  • Suitable for road, city, and mountain bikes

Buy Now Pay Later options available with Klarna Smooth Payments or PayPal Pay In 3. Just select Klarna or PayPal Pay In 3 at checkout to get more time to pay. Eligibility for Klarna Smooth Payments or PayPal Pay In 3 is determined at checkout.

CYCLISTS – please consult “Rules for Cyclists” sections 59 to 82 of the Highway Code.

Additional information

Weight 0.337 kg

Rinsten Spring Black, Rinsten Spring LED


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