Absolute Black Premium Race Oval Shimano 4 Bolt Outer Chainring

MSP £ 86.00
£ 79.99 - £ 79.99
MSP £ 86.00 , Save 7%
£ 79.99

Presenting the world's finest, Absolute Black's Premium Race Oval Shimano 4 Bolt Outer Chainring maximises power output whilst reducing resistance for smoother pedal efficiency. Optimised around seamless gear shifting, this oval chainring has been constructed with a machine cut-out free design, enabling a ramp and recess design that aids in smooth chain and gear shifting transitions. Eliminating risks of cramps and achieving a higher average speed make this chainring is perfect for hill climbers.

  • Long lasting construction
  • Six upshifting ramps
  • 12 downshifting points
  • Smooth angled surfaces
  • Ram and recess solution
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1 in stock, ready to dispatch.
UK, EU and Worldwide delivery available.

Reserve now, collect from our Esher Collection Point tomorrow

Reserve now, collect from our Hampton Wick Store from 12pm tomorrow

Presenting the world's finest, Absolute Black's Premium Race Oval Shimano 4 Bolt Outer Chainring maximises power output whilst reducing resistance for smoother pedal efficiency. Optimised around seamless gear shifting, this oval chainring has been constructed with a machine cut-out free design, enabling a ramp and recess design that aids in smooth chain and gear shifting transitions. Eliminating risks of cramps and achieving a higher average speed make this chainring is perfect for hill climbers.

  • Long lasting construction
  • Six upshifting ramps
  • 12 downshifting points
  • Smooth angled surfaces
  • Ram and recess solution
Read full description

Absolute Black Premium Race Oval Shimano 4 Bolt Outer Chainring - Black

Ride with the power and efficiency of a pro with Absolute Black's Premium Race Oval Shimano 4 Bolt Outer Chainring. Optimised around leg physiology, this oval chainring produces three key benefits of fresher relaxed legs, higher average speed efforts uphill and reduced risks of cramps for a more enjoyable ride.

Would you be surprised that an oval chainring feels more round than the standard? Well, it has been proven that the elliptical shape of these chainrings utilise more muscle groups, whilst reducing peak loads and stress on knee joints, enabling maintained maximum effort and higher speeds for longer durations. So with less effort required and reduced chances of cramps and muscle fatigue this chainring is the perfect match for hill climbing cyclists.

Designed with smoother shifting in mind, this Premium Race Oval Chainring has been constructed with smooth angled surfaces on the inside, unlike most machine cut chainrings this delivers improved chain conversions. And additionally, enables the utilisation of a ramp and recess design providing additional seamless gear transitions and chain stability even under load.

The six upshifting ramps and 12 down shifting points provide quick and efficient gear changes, and with a simplified design this sleek chainring eliminates the need for derailleur modification. Proving to be one of the world's finest oval chainrings

Stuck on choice?

  • 50T outer chainring: Choose this size if you ride for pleasure or sportive events. This is the most versatile and comfortable size.

  • 52T outer chainring: If you race and feel strong, it's the classic outer chainring size and a great option for experienced riders.

Additional information:

Compatibility: Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700. Di2 & Pioneer, SRM and other power meters.

Bolts: For the outer chainring please order long bolts or bolt covers. Changing the inner chainring to oval only? Use original bolts.

Note: Sold as singular chainring, does not include crank arm or inner chainring.

FEATURES
  • Material: CNC machined 7075 Txxx aluminium, type 2 anodising
  • Weight: 154g
  • Attachment: 4 bolt, 110 BCD
  • Long lasting construction
  • Six upshifting ramps
  • 12 downshifting points
  • Smooth angled surfaces
  • Ram and recess solution
  • Optimised to each size separately
  • Doesn't require front derailleur modification
  • Ideal for road climbs
  • Shimano compatible

PRODUCT REF: RO-4BOLT

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 - £1.99

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 SigmaSport.co.uk 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. For Highlands and Islands, please allow up to 5 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 are 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 are 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 from either our Sigma Sport store in Hampton Wick or our Collection Point in Esher. Just select the Reserve & Collect button in the basket. Please note that bikes orders will require a 10% deposit before we build your bike. We will contact you for payment after you've placed your order.

* 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.

** 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: 72 hours if in stock at store, collect in up to 7 days (sometimes quicker) if in stock at our warehouse. Please note that bikes orders will require a 10% deposit before we build your bike. We will contact you for payment after you've placed your order.

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 DHL for fast and reliable delivery. For European countries we now offer free delivery with a minimum spend, see the table below.

For all other countries please add your items to the basket and proceed to the checkout where we will display the delivery cost.

European Free Delivery Information
Country Minimum Spend for Free Delivery Delivery Time in Working Days (Mon - Fri)
Austria 99 € 3-4 days
Belgium 99 € 2-3 days
Bulgaria 99 € 3-4 days
Croatia 99 € 3-4 days
Czech Republic 99 € 3-4 days
Denmark 730 KR 3-4 days
Estonia 99 € 3-4 days
Finland 99 € 3-4 days
France 99 € 2-3 days
Germany 99 € 2-3 days
Gibraltar 99 € 3-4 days
Greece 99 € 3-4 days
Hungary 99 € 3-4 days
Ireland 30 € 2-3 days
Italy 99 € 4-6 days
Latvia 99 € 3-4 days
Lithuania 99 € 3-4 days
Luxembourg 99 € 2-3 days
Netherlands 99 € 2-3 days
Norway 910 KR 3-4 days
Poland 99 € 3-4 days
Portugal 99 € 4-6 days
Romania 99 € 3-4 days
Slovak Republic 99 € 3-4 days
Spain 99 € 3-4 days
Sweden 945 KR 3-4 days
Switzerland 116 CHF 3-4 days

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.

Stock Alert

Please alert me via email when this product is back in stock.

How do I complete my order?

You will be given the option to pay by finance as part of the checkout process. The exact finance options offered may vary depending on the other items in your basket.

Before choosing finance please read our full Terms and Conditions.