Shimano Road BR-RS305 Flat Mount Disc Brake Calliper

Shimano Road BR-RS305 Flat Mount Mechanical Disc Brake Caliper – Front

Bring confident, consistent braking to your road or cyclocross bike without the complexity of hydraulics. The Shimano BR-RS305 is a flat mount, cable-operated disc brake caliper designed to work seamlessly with your existing compatible Shimano road brake levers or STIs, giving you disc brake power with an easy upgrade path.

Perfect for modern flat mount forks, it delivers powerful, controlled braking in all conditions in a lightweight, low-profile package.

Key Features

• Mechanical (cable) disc brake – no hydraulic fluid or bleeding required
• Road / CX upgrade friendly – works with compatible Shimano road brake levers and STIs
• Flat mount front caliper – for flat mount forks, with adapter for 140 mm and 160 mm rotors
• Increased pad–rotor clearance – helps reduce unwanted rotor rub and drag
• Shim-less mounting system – quick, precise installation and setup
• Adjustable pad clearance – easy fine-tuning for perfect lever feel
• Lightweight, rigid construction – forged one-piece alloy body for strength and low weight
• Long arm design – maximised power and modulation, optimised for New Super SLR brake levers
• Optimised for Ice Tech rotors – for consistent braking and improved heat management
• High-performance pads included – resin compound aluminium radiation fin pads reduce brake surface temperature by up to 50°C
• Rotor compatible – suitable for both Centre-Lock and 6-bolt rotors

Technical Details

• Model: Shimano BR-RS305
• Mount type: Flat mount (front)
• Actuation: Mechanical (cable-operated)
• Recommended rotor sizes: 140 / 160 mm (with supplied adapter)
• Pad type: Resin compound pad with aluminium cooling fins (radiation fin)
• Construction: Forged one-piece alloy caliper body
• Recommended rotors: Shimano Ice Tech series
• Rotor interface compatibility: Centre-Lock and 6-bolt

Included in the box

• 1 x Shimano BR-RS305 flat mount front disc brake caliper
• 1 x Set of resin compound aluminium finned pads (pre-installed)
• Flat mount adapter (for 140 / 160 mm configuration)
• Mounting hardware and shim-less brackets

This ready-to-fit caliper is ideal for riders who want the control and consistency of disc brakes using their existing mechanical road levers, with easy setup and excellent heat management for long descents and demanding conditions.

DELIVERY

Delivery to mainland UK addresses are free for orders over £40. Except when you choose delivery to a third party (Click and Collect) there is a charge of £5.95 to cover some of the additional cost the couriers charge for this service. If you choose to collect from Fawkes warehouse there is no shipping charge.

There will an additional charge for deliveries to Highlands and Islands. 

RETURNS TO FAWKES

Whether it’s a jersey that doesn’t fit, or the colour is not quite right, sometimes you’ll need to return items to us.

If an item is 'as new' and has not been used or fitted in any way, you can return it to us by post within 90 days of delivery for a refund. Please ensure that the goods are returned in their original packaging and are in an unused condition.

Please click HERE to print and then complete the returns form and include it inside your parcel.

If you wish you can use our Royal Mail Returns service please follow the instructions on the link below to return your parcel to us.

Royal Mail Returns Service

Please pack the item carefully to avoid damaged during shipping.

Customers need to pay the cost of return delivery unless the item is faulty and this will be deducted from your refund, currently £3.95.

If your have a large item e.g. Child seat, Bike, trailer etc. please contact our customer service team at Guy@fawkes-cycles.co.uk to arrange the best way to return your item, the cost will be deducted from your refund.

You will not receive a refund for the retail value of any free or promotional items you are sent, and you will be charged if they are not returned.

UNWANTED ITEMS

If you change your mind on your purchase, you have a full 90 days to return it for a refund. All Goods must be unused, in a saleable condition and in their original packaging with all labels still attached.

Please pack the item carefully to avoid damaged during shipping.

There are some exclusions to our 90 day returns policy, which are detailed below:

Nutritional products or those with a best before date must be returned within 28 days*

Any customised items such as wheel builds cannot be returned*

GPS systems such as sports watches or cycle computers can only be returned if unregistered*

For hygiene reasons, any intimate garments such as facemasks, underwear and swimsuits can only be returned if the items are faulty.

*Unless faulty

If you wish to return your item for a refund, please follow the returns procedure above.

We try our best to process all refunds within 14 working days. We'll refund your item via your original payment method.

You will not receive a refund for the retail value of any free items you are sent, and Fawkes may charge you for this item if you fail to return it

FAULTY ITEMS

If you feel that your purchase has developed a fault, then please contact us with photographs of the issue before returning any goods - we may be able to solve your problem without you incurring any further inconvenience.

If you find a fault with your item, send it back to us and we'll take a look at it as soon as we can. Items sent back to us will undergo an inspection and it may be necessary to send the item away to the manufacturer to confirm the fault. If we confirm a manufacturing fault, we'll happily replace or refund it.

Please pack the item carefully to avoid damaged during shipping. 

Faulty items should be returned within a reasonable time and in a clean and dry condition. PLEASE NOTE, WE WILL NOT PROCESS DIRTY ITEMS.

Please enclose all your details and a covering note explaining the fault and any other useful details.

We'll try to get back to you within 14 working days of receipt of your parcel, although during busy periods this may take slightly longer.

Your statutory rights are not affected.

We reserve the right to recharge return carriage on items where no fault is identified.

Customer Service Email: Guy@Fawkes-Cycles.co.uk

Please contact us for our Payment & Security policy.