Bontrager Ion 350 RT Front Light

MSP £ 54.99 , Save 5%
£ 51.99

2 in stock, ready to dispatch.

UK delivery available.

Available for Reserve & Collect.

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A wide spread beam of 350 lumens, ANT+ compatibility for use with the Bontrager Transmitr Wireless Remote (available separately) and 10 hours of riding time - this is why the Bontrager Ion 350 RT Front Light is one of the most successful lights on the cycling market. Its powerful light ensures you’re always seen from up to 1.5km away, whilst a weatherproof USB port gives you the option to charge the light from a computer, making it perfect for commuting.

Bontrager Ion 350 RT Front Light

The Bontrager Ion 350 RT Front Light is a great choice for any rider looking to enhance their visibility and functionality on the bike. The powerful, constant blast of 350 lumens gives a wide spread beam of light, whilst a recharge time of 4 hours makes it ideal for commuting.

The addition of Bontrager’s revolutionary Transmitr feature is welcomed when you’re riding in dark, cold conditions when you’re wearing gloves and even when the light is strapped to your helmet. Connected through ANT+, this light can be controlled through the Bontrager Transmitr Wireless Remote (sold separately) for the ultimate in on the bike safety. Instead of having to fiddle about with buttons and switches when you’re riding, this feature completely takes it out of the equation.

Through extensive research, Bontrager was able to identify that lights need to be visible from at least 400m to give drivers ample time to notice and react to a cyclist. Instead of just giving the Ion 350 RT Front Light 400m of visibility, it’s visible from up to 1.5km away, therefore giving you more than enough safety on the road. In the day, Bontrager recommend the use of ‘Day Flash’ mode, which lasts 10 hours, whilst ‘Night Flash’ lasts up to 8 hours.

The Ion 350 RT has also been completely weather sealed. Even the USB charging port is protected from the rain and allows you to plug your light into your computer when you arrive at the office, and you’ll be riding bright all the way home.


  • Quick connect bracket (compatible with Blendr mounts)
  • Micro USB charging cable
  • LEDs: 1
  • Visibility: 1.5km
  • Run Time: Up to 10 hours
  • Battery: Li-Ion 1450mAh 3.7 Volt
  • Colour: Black
  • ANT+ enabled for use with all Transmitr products
  • Use Transmitr (sold separately) for wireless on/off, battery status, high beams and mode selection
  • Ideal for helmet or handlebar mount
  • 350 Lumens via high-power CREE LED
  • 5 Modes: 350LM-1.50hrs, 200LM-3hrs, 100LM-6.00hrs, Night Flash-8 hrs, Day Flash-10 hrs
  • Fully charges in 4 hours through sealed Micro USB port
  • Includes quick connect bracket and micro USB charging cable
  • Blendr compatible, secure bar mount available


UK Delivery Options

Free Delivery on all orders over £30

Estimated delivery within 4 working days (a delivery charge of £1.99 for orders under £30.00 will apply)

CollectPlus Delivery

Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK CollectPlus locations specified on the website where they will be held awaiting collection for a period of 10 days.

Orders placed are normally dispatched within 2 working days.

Priority 1st Class Delivery - £2.99

Estimated delivery within 2 working days.

Next Working Day Delivery* - £4.99

A guaranteed tracked courier delivery, place your order before 3pm, deliveries are made Monday to Friday.

Saturday pre 12 Delivery - £4.99

Saturday delivery orders must be placed by 1pm Friday and is only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.

Sunday pre 12 Delivery - £4.99

Sunday delivery orders must be placed by 1pm Friday and is only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.

Reserve and Collect** - FREE

Reserve & Collect is available on all items marked 'Collection'. It is a FREE delivery option that allows you to collect your order from either our Sigma Sport Store, Hampton Wick or our Reserve & Collect location in Esher. Just select the Reserve & Collect button in the basket.

** Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 4 days if in stock at store, collect in up to 7 days (sometimes quicker) if in stock at warehouse.

* Next Working Day delivery is only available on items in stock in our warehouse and excludes pre- order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.

London Same Day (Order Before 1pm)

We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.

More information on our Same Day delivery options.

Bike Deliveries

All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 4 - 5 working days.

Deliveries are made Monday to Friday on a pre-12pm delivery. One of our customer service team will be in contact to arrange a convenient day for delivery.

More information on all our UK delivery options.

International Delivery and Returns

We ship to over 100 countries using Tracked Post or DHL for fast and reliable deliveries. To see delivery options and delivery times, please add your items to the basket and proceed to the checkout.

International customers have 30 days from their order date to return unused and unopened purchased items.

Please note we cannot accept any goods back if the original packaging is opened. For full details, see this link.

Free UK Returns

We offer a free returns service for our UK customers. Sigma Sport will happily refund or exchange any item purchased at Sigma Sport, excluding Sigma Sport gift vouchers and personalised products except when faulty.

More information on the Sigma Sport returns procedure.

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