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BBB · E-bike lockring tool
The one tool that gets a Bosch chainring off.
$49.99
PriceIn stock, ready to ship
A dedicated spanner for the lockring that holds the sprocket onto a Bosch mid-drive e-bike motor. The long handle gives plenty of leverage and the soft grip keeps your hand comfortable when it's done up tight.
Sold by Ashburton Cycles
Verified store
Price
$49.99
Fits
Bosch mid-motor sprocket lockrings
Handle
Extra long, Kraton grip
Model
BTL-128E
The front sprocket on a Bosch mid-drive e-bike is held on by a lockring that ordinary chainring tools won't fit. The BBB LockOut BTL-128E is made for exactly that job, removing and refitting the lockring so you can swap a worn sprocket.
The handle is extra long for more leverage on a tight lockring, and the Kraton grip gives a firm, comfortable hold.
It's a smart tool for anyone who looks after their own e-bike drivetrain, as e-bike sprockets and chains wear faster than on a regular bike.
E-bike owners and mechanics servicing the drivetrain on Bosch mid-drive motors.
Bosch specific
Made for Bosch mid-motor sprocket lockrings.
Extra leverage
Long handle for tight lockrings.
Comfortable grip
Kraton covered handle.
Every detail as listed by the manufacturer.
BBB · E-bike lockring tool

The one tool that gets a Bosch chainring off.
$49.99
In stockFits
Bosch mid-motor sprocket lockrings
Handle
Extra long, Kraton grip
Model
BTL-128E
A dedicated spanner for the lockring that holds the sprocket onto a Bosch mid-drive e-bike motor. The long handle gives plenty of leverage and the soft grip keeps your hand comfortable when it's done up tight.
The front sprocket on a Bosch mid-drive e-bike is held on by a lockring that ordinary chainring tools won't fit. The BBB LockOut BTL-128E is made for exactly that job, removing and refitting the lockring so you can swap a worn sprocket.
The handle is extra long for more leverage on a tight lockring, and the Kraton grip gives a firm, comfortable hold.
It's a smart tool for anyone who looks after their own e-bike drivetrain, as e-bike sprockets and chains wear faster than on a regular bike.
E-bike owners and mechanics servicing the drivetrain on Bosch mid-drive motors.
Bosch specific
Made for Bosch mid-motor sprocket lockrings.
Extra leverage
Long handle for tight lockrings.
Comfortable grip
Kraton covered handle.