Your RocStem. Your video. Your prize.

Shoot a film. Upload it. Win €500.

Show us how you make your RocStem Whether you assemble, drive, or use it – in the garage, on the train, or traveling in a camper van. The most creative submissions have a chance to win. €500 in cash.

🎥 Submit your video now – it's worth participating!

It's that easy

RocStem show
Shoot a video (20 seconds to 2 minutes; Max: 30Mb) showing how you mount, use, or deploy your RocStem on the go.

Submit video
You have two options:

Send it directly via email to: info@rocker-parts.de
Or upload it right here.

All high-quality videos have a chance to be published – and thus to win the grand prize! The draw will take place in November 2025 instead of.

>>> UPLOAD HERE <<

What we want to see

✅ Good image quality (at least HD)
✅ Creative applications: assembly, transport, everyday life, tours
✅ Optional with music or explanations
✅ No unedited raw footage – the video should simply look good.

Format recommendation:Portrait format (9:16) for Reels, Stories or Shorts – landscape format (16:9) for classic YouTube or Facebook videos.
The important thing is: Good quality, creative implementation, clear view of the RocStem.

🎯 The better the video, the higher the chance of publication & winning!

The profit

500,- € in cash – for the best published video
Your clip will be shown on our channels.
Glory, honor and lots of attention for your bike and your talent

Submission deadline

Submission deadline: October 31, 2025, 11:59 PM
Winner announcement: November 2025 on our channels

Terms and conditions of participation

You can find all the details about the process, data protection and usage rights here:

>>> TERMS AND CONDITIONS OF PARTICIPATION <<

       EXCELLENT  
   Based on 231 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Ands 12 
 September 8, 2026
 
 
 Trustindex verifies whether the original source of the rating is Google. I ordered two of each of the Z4 folding pedals and the RocStem Bend 35 swivel stem. Delivery arrived after three days. The stems are of excellent quality. The pedals still need to prove themselves over time, but they also make a very good impression. I can highly recommend both items for saving space when storing mountain bikes in the garage of my motorhome. The prices are completely justified.
  
 
     Posted on Google  
   
   Jörg Lucius 
 August 31, 2026
 
 
 Trustindex verifies whether the original source of the rating is Google. I'm truly impressed with how well the communication with Martin worked; all my questions were answered very quickly. I ordered everything he suggested for the handlebar conversion. The stem, including the extension, arrived very quickly, along with the assembly instructions. Everything fit perfectly, and I'm very happy. Thanks again! Highly recommended.
  
 
     Posted on Trustindex  
   
   A. Schmidt 
 August 22, 2026
 
 
 Trustindex verifies that the original source of the rating is Trustindex. +2
RocStem AiO - Swivel stem and accessories The purchased parts are high-quality and easy to assemble. Communication was quick and customer-friendly when problems arose. Shipping was super fast despite choosing the 10-day waiting option.
  
 
     Posted on Google  
   
   Heinrich Mook 
 August 19, 2026
 
 
 Trustindex verifies whether the original source of the rating is Google. I installed the RocStem Bend Max today. Excellent workmanship, easy installation. It does exactly what it's supposed to do – rotate the handlebars 90° and lock them in position.
  
 
     Posted on Trustindex  
   
   Thomas Schreiner 
 August 15, 2026
 
 
 Trustindex verifies that the original source of the rating is Trustindex. +0
Stem "straight handlebars"„ We spent three weeks on Elba and thoroughly tested the stem(s) on the truly bare trails of the Legend Cup on Monte Calamita. The result – fantastic!! The stem performed perfectly on rough terrain without any weaknesses, loosening, or anything else! For us, this means – perfect execution of an extremely good idea!!! Huge respect to Martin and his company Rocker Parts!! 👍👍👍💪💪💪💪🤘🤘🤘 Best regards (still from Elba), Thomas
  
 
     Posted on eBay  
   
   in the 
 July 30, 2026
 
 
 Verified No, the item looks slightly different than in the photo. The bearing has too much play. The milled points are too sharp; I've rounded them off myself.
  
 
     Posted on eBay  
   
   e***g 
 July 26, 2026
 
 
 Verified ::: As expected, a beautiful piece!
  
 
     Posted on Trustindex  
   
   Andreas Nonnenmacher 
 July 24, 2026
 
 
 Trustindex verifies that the original source of the rating is Trustindex. +2
Great accessories Very high-quality accessories. Easy assembly. Very friendly contact via email and fast delivery.
  
 
     Posted on Trustindex  
   
   Günter Hoetling 
 July 21, 2026
 
 
 Trustindex verifies that the original source of the rating is Trustindex. Excellent service! Super fast response and very helpful! Communication was excellent, and I quickly received the information I needed. Highly recommended!
  
 
     Posted on Google  
   
   Stefan Lange 
 July 21, 2026
 
 
 Trustindex verifies whether the original source of the rating is Google. I ordered Z4 folding aluminum pedals in black for my Vello Gravel bike from Rocker Parts. Their service was excellent; my package got lost, and Rocker Parts promptly sent a free replacement without any hassle. The first shipment eventually turned up and was returned. The pedals are fantastic quality; they perform significantly better than the original pedals with plain bearings and are also lighter.