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Revvi Hydraulic Rear Brake System - Fits 18" Bikes
4.9Excellent241 reviews on Trustpilot

Revvi Hydraulic Rear Brake System, Fits 18" Bikes

£42.99

or 3 payments of £14.33 with Klarna

Pay in 3 with Klarna

  • Split your purchase into 3 interest-free payments, taken every 30 days.
  • Choose Klarna at checkout. No fees when you pay on time.
  • 18+, UK residents only. Credit subject to status. T&Cs apply.
  • Missed payments may affect your ability to use Klarna and could affect your credit score.
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Tracked UK courier delivery Sent from our UK warehouse. Estimated delivery date shown at checkout.
Delivery info
30-day returns On unused items in their original packaging.

Delivery information

  • Sent from our UK warehouse by tracked courier, such as APC Overnight.
  • Tracking details are emailed once the courier has your order.
  • An adult may need to be in to receive larger deliveries.
  • Parts and accessories may arrive separately from your bike.
  • Delivery can take longer around bank holidays, Black Friday and Christmas.
  • We are online only, so collection is not available.

Returns

  • Changed your mind? Return unused items within 30 days of delivery.
  • Items must be unused, undamaged and complete, with all accessories and original packaging.
  • A bike that has been ridden or used may be refused, or refunded at a reduced value.
  • Arrived damaged or incorrect? Contact us promptly, ideally within 48 hours, with your order number and photos.
  • Return postage is paid by you for a change of mind. We cover it if the item is faulty or incorrect.
  • Refunds go back to your original payment method within 14 days of us receiving the item.
  • Please contact us before sending anything back, so we can give you return instructions.

This does not affect your statutory rights.

  • Description

    Hydraulic Rear Brake System

    Please note: This item will only fit the new 18" Revvi bikes

  • Delivery & Returns

    Delivery

    Our Revvi spare parts are held in UK warehousing and we aim to dispatch all in-stock orders within 1–2 working days.

    At checkout, you'll be able to choose from the available delivery services, including Standard and Express shipping, depending on how quickly you need your order.

    Once your order has been dispatched, you'll receive tracking details via email.

    Returns

    If you've ordered the wrong part, you can return it within 30 days of delivery, provided it is:


    • Complete with all original packaging

    • Unused and unmodified

    • In a clean, resalable condition

    Please note that return postage costs are the responsibility of the buyer, unless the item is faulty or supplied incorrectly.

    Electrical Items

    For safety and quality assurance reasons, we do not accept returns or exchanges on electrical items (including batteries, chargers, controllers, displays, motors and wiring components) unless the item is found to be faulty upon delivery.

    If you are unsure whether a part is suitable for your bike, please contact us before ordering and we'll be happy to help ensure you purchase the correct item.

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Revvi full-face helmet sizes

How to measure

Measure around the widest part of the rider's head. The tape should pass above the eyebrows and ears and around the fullest part at the back of the head.

SizeHead circumference
XS, Extra Small48 to 50cm
S, Small51 to 54cm
M, Medium55 to 58cm
L, Large59 to 61cm

Always choose by the rider's actual head measurement, not by age. Head shape can also affect how a helmet fits.

Between sizes? Do not automatically choose a larger helmet for growing room. A helmet must fit securely now. If the rider falls between sizes, check the fit carefully before use.

Amped AMP-1 helmet sizes

How to measure

Measure around the widest part of the rider's head. The tape should pass above the eyebrows and ears and around the fullest part at the back of the head.

SizeHead circumference
M, Medium54 to 58cm
L, Large58 to 62cm

Always choose by the rider's actual head measurement, not by age. Head shape can also affect how a helmet fits.

Measuring exactly 58cm? That falls in both sizes. Fit varies with head shape, so check the measurement and that the helmet sits securely before use. Do not choose a loose helmet to allow growing room.

Revvi riding jersey sizes

Choosing a size

The Revvi Kids Riding Jersey comes in dedicated sizes for younger children and growing youth riders. Select the size before adding it to your basket.

SizeAge guide
Age 2About 2 years
Age 3About 3 years
Age 4About 4 years
Age 5About 5 years
YS, Youth SmallAges 6 to 7
YM, Youth MediumAges 8 to 9
YL, Youth LargeAges 10 to 11

Ages are a guide only. Consider the child's height, build and preferred fit too.

Between sizes? If the rider is between sizes, still growing or likely to wear a base layer underneath, the larger size may be more comfortable.

Kids riding jersey sizes

How to measure

Compare these with a jersey or long-sleeve top that already fits the rider well. Chest width is measured across the front with the jersey laid flat, so it is half the full chest.

SizeAge guideHalf chestLength
2 to 3Ages 2 to 331cm49cm
3 to 4Ages 3 to 433cm51cm
4 to 5Ages 4 to 535cm53cm
5 to 6Ages 5 to 637cm55cm
6 to 7Ages 6 to 739cm57cm
YS, Youth SmallAges 7 to 941cm59cm
YM, Youth MediumAges 9 to 1145cm63cm
YL, Youth LargeAges 11 to 1449cm67cm

Ages are a guide only. The chest width and body length are the best way to choose.

Riding glove sizes

How to measure

Palm: straight across the widest part of the palm, not including the thumb.
Length: from the base of the wrist to the tip of the longest finger.

SizeAge guidePalm widthHand length
2 to 3Ages 2 to 36.5cm11.5cm
4 to 5Ages 4 to 57cm12cm
6 to 7Ages 6 to 77.5cm12.5cm
YS, Youth SmallYouth Small8cm13.5cm
YM, Youth MediumYouth Medium8.5cm14cm

Use the measurements rather than age alone. Hand shapes vary, so check both wherever possible. Once fitted, make sure the rider can comfortably use the throttle, brakes and every handlebar control.

Between sizes? The larger size usually gives a more comfortable fit and a little growing room, but the glove must not get in the way of safe control of the bike.
Revvi Hydraulic Rear Brake System - Fits 18" Bikes
£42.99