The concept

SPIRGRIPS® is a brand new concept of ergonomic grips based on physiological studies. The shape of these small inner bar grips is designed to correct the position of the hands of the user naturally by aligning the joints of his forearms correctly. This position has a huge impact on rider comfort by eliminating joint and muscle pain.

SPIRGRIPS® is the result of more than five years of research.  These inner bar grips were developed, tested and scientifically validated in Switzerland by a team that specializes in sports medicine in collaboration with professional cyclists.

Numerous prototypes have been tested using the latest 3D printing technologies to validate the ergonomics of the new handle and its perfect integration on the handlebars available on the market. Once the perfect configuration was found, the prototype could be successfully industrialized. SPIRGRIPS® is today produced in composite by thermoplastic injection and pass even the most enduring mechanical resistance tests.

SPIRGRIPS® offers an alternative position on the handlebars without replacing or changing anything to the standard grips. The main goal was to ensure the user would not have to modify his cycling habits at all. The cyclist has therefore the choice to use SPIRGRIPS® when he wants, maintaining brake access at any time.

SPIRGRIPS® is a brand new concept of ergonomic grips based on physiological studies. The shape of these small inner bar grips is designed to correct the position of the hands of the user naturally by aligning the joints of his forearms correctly. This position has a huge impact on rider comfort by eliminating joint and muscle pain.

SPIRGRIPS® is the result of more than five years of research.  These inner bar grips were developed, tested and scientifically validated in Switzerland by a team that specializes in sports medicine in collaboration with professional cyclists.

Numerous prototypes have been tested using the latest 3D printing technologies to validate the ergonomics of the new handle and its perfect integration on the handlebars available on the market. Once the perfect configuration was found, the prototype could be successfully industrialized. SPIRGRIPS® is today produced in composite by thermoplastic injection and pass even the most enduring mechanical resistance tests.

SPIRGRIPS® offers an alternative position on the handlebars without replacing or changing anything to the standard grips. The main goal was to ensure the user would not have to modify his cycling habits at all. The cyclist has therefore the choice to use SPIRGRIPS® when he wants, maintaining brake access at any time.

The SPIRGRIPS® study

16 trained cyclists without SPIRGRIPS® experience volunteered to participate in the study. Each participant performed a one-day laboratory cycling test. The goal of this study was to verify whether, by using SPIRGRIPS®, cyclists could increase comfort and retain more force after prolonged biking exercise.

The test included two 20-minutes pedalling sessions at ~200 W that were separated by 20-minutes of passive recovery. Each pedalling session contained two pedalling periods of 9 minutes with fork vibrations interspersed by 2 min of pedalling without fork vibrations. Participants had to keep their hands on the traditional grip or on SPIRGRIPS® throughout the pedalling session. All the subjects reported their ratings of perceived comfort on a scale from 0 (very much uncomfortable) to 10 (very much comfortable). Surface EMG activity of flexor carpi radialis, extensor digitorum and triceps brachii were continuously measured by sensors. Maximum voluntary grip force of right hand was measured by an electronic force transducer.

Prolonged biking can involve pain complain in the wrists in particular due to the ulnar nerve compression when using traditional grips (Capitani et al., 2002; Eckman et al., 1975). This phenomenon seems to be amplified by mechanical vibrations that are largely encountered during biking practice despite the use of damping systems located in the fork and/or the frame.

16 trained cyclists without SPIRGRIPS® experience volunteered to participate in the study. Each participant performed a one-day laboratory cycling test. The goal of this study was to verify whether, by using SPIRGRIPS®, cyclists could increase comfort and retain more force after prolonged biking exercise.

The test included two 20-minutes pedalling sessions at ~200 W that were separated by 20-minutes of passive recovery. Each pedalling session contained two pedalling periods of 9 minutes with fork vibrations interspersed by 2 min of pedalling without fork vibrations. Participants had to keep their hands on the traditional grip or on SPIRGRIPS® throughout the pedalling session. All the subjects reported their ratings of perceived comfort on a scale from 0 (very much uncomfortable) to 10 (very much comfortable). Surface EMG activity of flexor carpi radialis, extensor digitorum and triceps brachii were continuously measured by sensors. Maximum voluntary grip force of right hand was measured by an electronic force transducer.

Prolonged biking can involve pain complain in the wrists in particular due to the ulnar nerve compression when using traditional grips (Capitani et al., 2002; Eckman et al., 1975). This phenomenon seems to be amplified by mechanical vibrations that are largely encountered during biking practice despite the use of damping systems located in the fork and/or the frame.

SPIRGRIPS® benefits

SPIRGRIPS® position
Standard position
SPIRGRIPS® have been designed to correct the position of the hands of the user naturally by aligning the joints of his forearms correctly which is not the case with traditional grips.

The use of SPIRGRIPS® decreases fingers flexor and elbow extensor muscle activity while increasing vibration transmissibility to the wrist. In addition, maximum voluntary grip force is not altered after a prolonged pedalling exercise with vibrations. Therefore, SPIRGRIPS® are particularly suitable for cyclists looking to keep force reserve in hand and forearm for extended efforts, braking in steeper downhill, or driving bike in technical sections.

The results have shown that by using SPIRGRIPS® the maximum voluntary grip force was not altered even after a prolonged pedalling exercise with vibrations. Thanks to SPIRGRIPS®, a cyclist can save up to 47% of muscle-energy by reducing vibrations.

SPIRGRIPS® have been designed to correct the position of the hands of the user naturally by aligning the joints of his forearms correctly which is not the case with traditional grips.

The use of SPIRGRIPS® decreases fingers flexor and elbow extensor muscle activity while increasing vibration transmissibility to the wrist. In addition, maximum voluntary grip force is not altered after a prolonged pedalling exercise with vibrations. Therefore, SPIRGRIPS® are particularly suitable for cyclists looking to keep force reserve in hand and forearm for extended efforts, braking in steeper downhill, or driving bike in technical sections.

The results have shown that by using SPIRGRIPS® the maximum voluntary grip force was not altered even after a prolonged pedalling exercise with vibrations. Thanks to SPIRGRIPS®, a cyclist can save up to 47% of muscle-energy by reducing vibrations.

How to install SPIRGRIPS®