A special tool for NJS-certified chains co-developed with a Keirin bike inspector.
CHECKER is an innovative tool to check the 6mm square nut closure system of NJS chains, such as IZUMI V-Chain. The small nuts on this type of track chain can loosen and sometimes can be lost if not properly tightened. This professional tool was updated with magnets to ensure not to drop the nut when using.
Get free shipping for orders over 100$ cad!
This offer is valid only when your order is shipped in Canada.
(Get free shipping from US on orders of 150$usd and more)
Less hassle More riding!
All our products carry a limited warranty from the manufacturer.
Please refer to the Warranty section to get more details about the warranty that applies to your products.