Double Checker Double Checker Double Checker Double Checker Double Checker Double Checker Double Checker

Double Checker

Chain & rotor wear checker
€22,99
Double Checker
Double Checker
€22,99
Description

The Double Checker is a pocket-sized, laser-cut precision tool to accurately check chain wear and rotor thickness. It features a built-in chain hook to keep the chain steady during installation and a ruler for quick measurements. Riding with a worn chain and rotors that are too thin can lead to the chain snapping, unreliable braking performance and overall increased wear of your drivetrain. With the Double Checker, you know exactly when you need to replace your chain and rotors to stay safe and fast while prolonging the life of your gear.

The three-point design is made to measure true pin wear, eliminating the effect of roller wear. This means you know precisely how worn your chain is. The rotor slots are labeled for use on brand-specific rotors, such as SRAM, Shimano, Campagnolo, Hope, and Magura.

How to use

Chain check

  1. Insert point 1 and 2 into the chain (Pointing the pins down)
  2. Lift the chain between points 1 and 2 to create tension
  3. Press point 3 down into the chain
  4. Read the wear indicator:

    < 0.5% – Chain in good condition
    > 0.5% – Replace 11/12/13-speed chains
    > 0.75% – Replace 7/8/9/10-speed chains

Rotor check

  1. Pick the right slot for your rotor
  2. If your rotor fits into the brand-specific slot, it needs to be replaced. When in doubt, always verify the minimum thickness on the rotor itself.

Chain hook

  1. Insert the two hooks, ensuring no tension on the chain in between the hooks for stable, mess-free chain mounting and dismounting.
  2. Close or open the missing link on your chain.
Features
  • Made for all 7-13-speed chains, including SRAM Flattop chains, Shimano and Campagnolo.
  • Exact rotor-thickness readings with brand-specific measurement slots: SRAM, Shimano, Campagnolo, Magura, and Hope.
  • Anodized aluminum is light, strong and Dynamic purple.
  • Guidelines displayed on the tool, no need for a handbook!
  • Clever chain hook makes chain handling quick, easy and safe.

Checking your chain and rotors for wear is crucial if you want to get the most out of your components and stay safe. A worn-out chain is slower, can affect the durability of your entire drivetrain and can snap more easily. Similarly, disc rotors that are too thin mean your braking power is drastically lower than with new rotors, which leads to unreliable braking and dangerous situations.

With the Double Checker, you know exactly how worn your chain and rotors are. The Double Checker measures true pin wear, which is the most relevant measurement to have. Separating pin wear from roller wear gives a more accurate result, enabling you to know the exact state of your chain. The rotor check, built-in chain hook and ruler make the Double Checker an unmissable tool in every cyclist’s toolkit.

  • Very happy that I can now check my disc brakes. Nice!
  • The broad compatibility with all chains I find practical.
  • Lightweight, self-explanatory, perfect.
  • 5 stars: 11 (85%)
  • 4 stars: 2 (15%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Lukas

Durchdachtes und smartes Tool

M
MICHEL MATHIAS (Les Mureaux, FR)
Très pratique, pour finition

Très pratique, pour évaluer l'usure de la chaîne, finition impeccable,solide.

A
Angelo
Handig!

Erg handig!

A
Anonymous (Bochum, DE)
Top

Top !!!

j
joel (Heusden-Zolder, BE)
Double checker

Gemakkelijk twee in ëen

S
Steffen Uecker (Prenzlau, DE)

Top!

C
Christof Verbert (Brasschaat, BE)
Handig Tooltje

Is handig, hebt je het nodig? met een schijfmaat kan je het ook allemaal als je de lengets en diktes weet.
Ik heb nog een ketting checker van BBB, ik heb getest bij een ketting, Bij BBB zat ik aan 1% en Dynamic aan 0.5%. Ik ga er van uit dat Dynamic getest en onderzoek heeft welke dat juiste afstanden zijn voor de ketting te meten en betrouwbare gaat zijn dan de massa productie van BBB.

Y
Yevhenii Blinder (Düsseldorf, DE)

Super

J
Jean-Philippe Humbert (Munich, DE)
Sehr praktisch

Die breite Kompatibilität mit allen Ketten finde ich praktisch.

R
Ralph Schmidt (Aspach, DE)
Alles in Einem

Leicht, selbsterklärend, perfekt.
Da das Produkt aus Aluminium ist, bin ich gespannt wie schnell es verschleißt

V
Volkert (Rotterdam, NL)
Nice to also check disc brakes

Received this for free with my order. Checking your chain is essential to make the most out of the drivetrain, so I already had a chainchecker. But safety (and braking) is even more important, so very happy that I can now check my disc brakes. Four check “slots” make sure you can test the brakes of all your bikes. Nice!

M
Michael Rudolph (Frankfurt am Main, DE)
Double Checker Gift

Das Double Checker Gift von Dynamic Bike Care ist für mich inzwischen ein absolutes Must-Have in der Werkstatt.
Die Antriebskettenlehre funktioniert super präzise und zeigt zuverlässig, wann die Kette wirklich gewechselt werden sollte. Kein Rätselraten mehr, kein unnötiger Verschleiß an Kassette oder Kettenblatt. Einfach ansetzen, prüfen – fertig.
Was ich besonders feiere: Es ist nicht nur ein Checker, sondern ein durchdachtes Tool zum Checken, Prüfen und Einstellen. Kompakt, hochwertig verarbeitet und liegt richtig gut in der Hand. Perfekt für alle, die ihren Antrieb sauber warten wollen – egal ob Hobbyfahrer oder Schrauber mit Anspruch.
Klare Empfehlung für jeden, der Wert auf Performance, Langlebigkeit und einen sauber eingestellten Antrieb legt.

M
Matthäus Schmid (Warendorf, DE)
Top Tool

Klein und handlich, hilft aber ungemein