Chainring & Guard

Brompton SKU: Q100009
Brompton Replacement Chain Ring For Spider Crank - 54T - Silver (5250542147)
Brompton Replacement Chain Ring For Spider Crank - 44T - Silver (5250542147)
Brompton Replacement Chain Ring For Spider Crank - 44T - Black (5250542147)
Brompton Replacement Chain Ring For Spider Crank - 50T - Black (5250542147)
Brompton Replacement Chain Ring For Spider Crank - 54T - Black (5250542147)
Brompton Replacement Chain Ring For Spider Crank - 50T - Silver (5250542147)

Chainring & Guard

Brompton SKU: Q100009
Regular price $49.99
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Shipping calculated at checkout.

Within 30 days of your purchase, if you find a lower advertised price for this product, we’ll match it. If we discount this product within 30 days of your purchase, either online or in-store, simply present your original receipt and we’ll match the price and refund you the difference.

To be eligible for a price match, the product must meet the following criteria:

  • Product must have the exact specifications
  • Price must be listed in CAD or USD
  • Final matched price must include all shipping, handling, and duties
  • Must be sold and shipped by an authorized dealer in Canada or the U.S. (excluding Amazon, eBay, or any other online-only retailers)
  • Must be new and not refurbished or liquidated stock
  • Must be in stock and available immediately
  • Price must not be lower due to an error, sale, or discount

To request a price match, visit our store or contact us. Please provide a written quote or a web address for the product showing the lower price.

The Genuine Brompton replacement Chainring & Guard is suitable for the Brompton Spider crank which has the replaceable chainring fitted to all new Brompton bikes since 2013.    

Available in all three Brompton chainring sizes, so if you find you need an easier or harder gear (or have simply worn yours out) then this is for you. If you have worn yours out then we recommend changing the rear cogs and chain at the same time. 

  • Brompton Chainring & Guard
  • Genuine Brompton replacement part
  • Only suitable for the Brompton spider crank with replaceable chainring
  • Available in 44T (-12%), 50T (standard) and 54T (+8%) sizes
  • Available in Black or Silver
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