Sigma Sports has slashed the price of a host of cycling products, with some serious savings to be had across bikes, components and kit.We've trawled through the sale to pick out five of the best deals, including more than 1,900 off Shimano's flagship road groupset and a carbon Trek Domane for less than 2,000.There are also big discounts to be had if you're looking to upgrade your gravel bike or treat your feet to some fancy shoes.Here are our top picks, but you can see the whole sale here.Shimano Dura-Ace R9270 Di2 groupset 3,579 1,625 (Save 55%) Dura-Ace is Shimano's flagship road groupset. Simon von Bromley / Our Media Getting Shimano's flagship road groupset for less than 2,000 certainly caught our attention.Sigma Sports has knocked 1,954 off its Dura-Ace R9270 Di2 groupset, bringing the price down from 3,579 to 1,625.Dura-Ace R9200 represented a major overhaul when it arrived, moving Shimano's top-tier road groupset to 12-speed and introducing semi-wireless shifting.The groupset uses wireless shifters, while the derailleurs remain wired to the central battery.It also features Shimano's Servo Wave braking technology and redesigned calipers with increased pad clearance.Despite rumours of a new generation being released soon, at 55 per cent off, this could be a tempting opportunity if you're planning a dream-bike build or looking to give an existing road bike a serious upgrade.This specific deal is for groupsets specced with 175mm cranks, but great savings can be had on shorter-cranked specs too. Buy Shimano Dura-Ace R9270 Di2 groupset now for 1,625Trek Domane SL 5 Gen 4 105 2,800 1,499 (save 46%) This looks a great deal for those wanting a carbon bike. Sigma Sports You can currently pick up a carbon Trek Domane for less than 1,500, with Sigma Sports taking 1,301 off the endurance road bike.The Domane SL is built around Trek's 500 Series OCLV carbon frame and is designed to balance speed with comfort over longer rides.The Gen 4 bike uses Trek's rear IsoSpeed system, which is designed to add compliance at the seat tube, while generous tyre clearance gives the Domane some versatility away from pristine tarmac.The SL 5 is equipped with Shimano's mechanical 105 groupset and hydraulic disc brakes.With a 29 per cent saving, this looks like one of the standout complete-bike deals in the sale.At the time of writing, there are sizes ranging from 50 to 60cm. Buy the Trek Domane SL 5 Gen 4 105 now for 1,499Shimano GRX 825 12-Speed Di2 Groupset Bundle 2,060 1,011 (save 51%) This could be a great upgrade for your gravel bike. Sigma Sports Roadies aren't the only ones getting a hefty Shimano discount.The latest 12-speed GRX RX825 Di2 groupset has dropped to 1,011, representing a saving of 1,049.GRX RX825 brought Shimano's electronic gravel groupset in line with its latest road offerings, using wireless shifters alongside a wired rear derailleur and battery.The shifters also feature additional buttons on the hoods, which can be configured to control compatible bike computers or used as extra shift buttons.If you've been considering moving your gravel bike to electronic shifting, a 51 per cent discount makes this considerably easier to justify.This specific discount is for 170mm cranks, although there are savings on the 172.5mm variation too. Buy Shimano GRX 825 12-Speed Di2 Groupset Bundle now for 1,011Scope R3 Carbon Road Disc Wheelset 1,300 479 (save 63%) Carbon wheels are rarely this cheap. Sigma Sports A carbon disc wheelset for under 500 isn't something we see every day.Sigma Sports has reduced the Scope R3 from 1,300 to 479, saving 821.The R3 uses 30mm-deep carbon rims, making it the shallowest option in Scope's Race Series and positioning it as a lightweight all-round wheelset rather than a deep-section aero option.The rims are tubeless-ready, and the wheelset uses Scope's own hubs.At 63 per cent off, these could make for a significant upgrade over the stock alloy wheels supplied with many road bikes.This specific deal is limited to SRAMs XDR freehub body. Buy the Scope R3 Carbon Road Disc Wheelset now for 479Sidi Shot 2S road shoes 425 96 (save 77%) Another true bargain. Sigma Sports You don't have to spend four figures to take advantage of one of the biggest discounts in the sale.Sidi's Shot 2S road shoes have fallen from 425 to 96, depending on size and colour a hefty saving of up to 77%.The Shot 2S sits towards the top end of Sidi's road shoe range and features the Italian brand's carbon sole and centrally mounted Tecno-3 closure system.There's also an adjustable heel-retention system, designed to help secure the rear of your foot inside the shoe.A 425 pair of shoes is undeniably extravagant, but at this price they become a much more interesting proposition how are they making money here?This specific price is for the Anthracite colourway, with a wide variety of sizes from 40 to 48 available at the time of writing.There are also good savings to be had on the other colourways. Buy the Sidi Shot 2S road shoes now from 96