




Our stems are thoughtfully designed, made from high-quality materials, and safety-tested. But as with any high-quality component, full performance is only achieved with proper use.
Therefore, we explain here very openly and understandably, what our extensions are made for – and what they are not made for.
Our stems are designed for ambitious riders who enjoy a sporty ride – on the road, on dirt roads, forest paths, or easy trails. Even more technically demanding routes are no problem., if you have the necessary driving experience.
The construction is based on a blend of stability, function and weight Designed – ideal for sporty trekking, urban or mountain bikes, even root trails, but not for extreme loads outside the intended scope of use.
There are some clear exclusions that we would like to state transparently. Not because the product is weak – but because it was made for a different purpose:
Why? Because such additional loads create leverage forces that our stems cannot withstand. not designed or tested have been. This can impair function and safety in the long term.
If you're unsure, this short self-assessment will help you:
Then everything will be fine. Welcome to Rocker Parts.
We stand for quality – but also for responsibility. Our products are made for everyday sports use, not for show or overloading.
Those who travel within the recommended usage profile will receive a durable, safe and technically sophisticated product. Anyone who goes beyond this leaves this area – and takes unnecessary risks.

Our stems are thoughtfully designed, made from high-quality materials, and safety-tested. But as with any high-quality component, full performance is only achieved with proper use.
Therefore, we explain here very openly and understandably, what our extensions are made for – and what they are not made for.
Our stems are designed for ambitious riders who enjoy a sporty ride – on the road, on dirt roads, forest paths, or easy trails. Even more technically demanding routes are no problem., if you have the necessary driving experience.
The construction is based on a blend of stability, function and weight Designed – ideal for sporty trekking, urban or mountain bikes, even root trails, but not for extreme loads outside the intended scope of use.
There are some clear exclusions that we would like to state transparently. Not because the product is weak – but because it was made for a different purpose:
Why? Because such additional loads create leverage forces that our stems cannot withstand. not designed or tested have been. This can impair function and safety in the long term.
If you're unsure, this short self-assessment will help you:
Then everything will be fine. Welcome to Rocker Parts.
We stand for quality – but also for responsibility. Our products are made for everyday sports use, not for show or overloading.
Those who travel within the recommended usage profile will receive a durable, safe and technically sophisticated product. Anyone who goes beyond this leaves this area – and takes unnecessary risks.
Please enter the order number and the email address from the order. You can then choose whether you want to cancel the entire order or only individual items.