When were developing Railhop Cranks, we had two tasks:

Protect the medial malleolus from sharp edges of the cranks (bone bulging out on the ankle).

Design and implement the world's strongest cranks

When we were developing Railhop Cranks, we had two tasks:

Protect the medial malleolus from sharp edges of the cranks (bone bulging out on the ankle).

Design and produce the world's strongest cranks


What have we done?

We shortened the profile of the crank by 10% compared with the first version. According to our calculations, this change reduced the frequency of ankle injuries by about 40%.

For the production of STRESS cranks used heat-treated steel of Japanese brand. This is the best steel existing on the market.

BMX cranks are exposed to huge and very specific loads. Thanks to the extensive experience we have gained over the years of riding, collecting statistics and testing, we know that tubes with a "rectangular" section are best for bmx cranks.

The frequency of ankle injuries reduced by 40%

Gusset

We were the first in the world to develop and introduce a gusset on cranks in 2013, which was produced to make cranks stronger, as well as to reduce the number of injuries to the medial malleolus. The gusset smoothes out the angles, practically excluding the possibility of a deep cut. For the production chromoly steel is used, which is cast in a special form. Then it is welded over the entire mounting area of the cranks to the spindle. Then the top of the seam is further polished to create a flat and smooth surface.


What have we done?

We shortened the profile of the crank by 10% compared with the first version. According to our calculations, this change reduced the frequency of ankle injuries by about 40%.

BMX cranks are exposed to huge and very specific loads. Thanks to the extensive experience we have gained over the years of riding, collecting statistics and testing, we know that tubes with a "rectangular" section are best for bmx cranks.

For the production of STRESS cranks used heat-treated steel of Japanese brand. This is the best steel existing on the market.

The frequency of ankle injuries reduced by 40%

Gusset

We were the first in the world to develop and introduce a gusset on cranks in 2013, which was produced to make cranks stronger, as well as to reduce the number of injuries to the medial malleolus. The gusset smoothes out the angles, practically excluding the possibility of a deep cut. For the production chromoly steel is used, which is cast in a special form. Then it is welded over the entire mounting area of the cranks to the spindle. Then the top of the seam is further polished to create a flat and smooth surface.


Specifications:

lifetime warranty
cro-mo 4130
heat-treated
2.5 piece
176 mm and 165 mm
22 mm spindle
both sides sprocket mounts
color: matt black and chrome
weight:907 grams with bolts (848 grams without)