KMC Drive Sprocket for Bosch - 15T, Super Narrow, Chromoly Black

BSFB5015

£10.99
£10.99 £10.99

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KMC Drive Sprocket for Bosch — 15T, Super Narrow, Chromoly Black

Replacement front drive sprocket for Bosch Gen 2 mid-motor e-bikes. Mid motors put enormous sustained load through the drivetrain, and the standard sprocket is usually the first thing to wear out — KMC's hardened chromoly version is built specifically to cope, rated for 3,500km+ of service.

Direct mount, super narrow 11/128" profile for use with multi-speed derailleur setups.

Key Features

  • Hardened chromoly steel — substantially tougher than standard steel
  • Rated for 3,500km+ service life
  • Precision tooth profile for efficient power transfer under high torque
  • Direct mount — straight replacement or upgrade
  • Suits Bosch Active Line and Performance Line Gen 2 motors

Specification

  • Brand: KMC (e-Bike Solutions)
  • Model: BSFB5015
  • Teeth: 15T
  • Size: 1/2" x 11/128" (super narrow)
  • Thickness: approx. 1.9mm
  • Material: Chromoly steel, black
  • Fits: Bosch Gen 2 — Active Line and Performance Line
  • Chain compatibility: KMC e9, e10, e11 and similar multi-speed e-bike chains
  • EAN Barcode: 8719189051018

⚠️ Not suitable for hub-geared models — those need the wide 1/8" single speed version. Also check your motor generation: Gen 4 uses a different mount.

Delivery Information

We carry lots of stock at Fife Cycles and also have an external warehouse where we get items transferred from.

If the part you want to buy is in stock with us then it will leave us SAME DAY if ordered before 1PM .

It will be sent via Royal Mail or Fedex depending on size and goes on a 24 Hour service complete with Tracking details.

If the item is displayed as 'In stock via Treks warehouse' then expect the order to take a little longer to fulfil (4-8 working days).

Can I return my order?

Of course you can.

We accept 30 day returns and even provide a return service free of charge.

Items returned must be in their original packaging and must not have been used.

Return your order here.

Warranty

We have you covered. We only deal with great brands so you will always be covered by the manufacturers warranty.

Trek - 2 year warranty

Bontrager - 2 year warranty

Santa Cruz - 2 year warranty

Sram- 2 year warranty.

Shimano - 2 year warranty

Wahoo Fitness - 2 year warranty

Do you have a warranty request? get in touch here.

KMC Drive Sprocket for Bosch - 15T, Super Narrow, Chromoly Black

Get in touch

We'll aim to get back to you within 24 hours.

If your order was sent via Royal Mail please click here to return your order.

 

If your order was sent via UPS please click here to return your order.

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