Its nearly Tour de France time, and this years race promises to be far more entertaining and unpredictable than the UK General Election campaign.Jonas Vingegaard won the yellow jersey in a landslide victory last year. But after the Danes crash and Tadej Pogaars dictatorial Giro performance, will the general classification be a hung parliament before the final stage time-trial in Nice?Having read his single-estate Lapsang Souchong tea leaves, Simon von Bromley has made his Tour tech predictions.Simon, BikeRadar directeur sportif George Scott and videographer Kai Eves are already in Florence for the Italian Grand Dpart.Armed with Vernier calipers, weighing scales and scoop-sensitive snouts, the trio will be covering the hottest Tour de France bikes on our website, and podcast and YouTube channels.Earlier in the week, Ashley Quinlan reviewed the new Wilier Verticale SLR, the Italian brands climbing bike, which Groupama-FDJ and Astana Qazaqstan will probably ride in the mountain stages.Trek confirmed its mysterious bike spotted at the Critrium du Dauphin is a slimmed-down Madone and discontinued the monda. Will you miss this weight-weenie heart throb?It has also been eMTB week on BikeRadar. Weve explained electric bike motors, reviewed the Merida eONE-Sixty 875, dissected the anatomy of eMTBs and rounded up the best lightweight electric mountain bikes.Thats not all. Chris Barnard recounted an eMTB adventure in the French Alps and Nick Clark set out why electric mountain bikes are taking over the trails.In other news, Wahoo released the rechargeable Trackr heart-rate monitor, the Edge 1050 became Garmins latest top-of-the-range bike computer and Raleigh announced the Chopper is back by popular demand.DT Swiss Ratchet DEG 240 hubsDT Swiss claims the low engagement angle makes the hubs more reliable. - Oscar Huckle / Our MediaThe DT Swiss Ratchet DEG 240 freehub has the lowest angle of engagement of any freehub the brand has made. The use of 90-tooth steel ratchets drops the angle of engagement to only four degrees.DT Swiss designed the Ratchet DEG 240 for its mountain bike wheels. It says the low engagement angle distributes load more evenly than pawl hubs and increases reliability.Only 240 of these snazzy red hubs were made. - Oscar Huckle / Our MediaThe Classic Edition of the hub comes in 12x148mm and 12x157mm Boost, with Shimano MicroSpline or SRAM XD freehub, and in six-bolt disc only. You can choose from 28 or 32 spoke holes.A rear hub will set you back 354.99 / $499.90 / 376.90 / AU$599.Only 240 samples of the 240 Classic DEG Red hub were made and we have one here in a glossy red colour.DT Swiss only offers this limited edition with 15x110 front and 12x148mm rear axles in 32h and SRAM XD freehub only. The rear hub costs the same as the Classic Edition, and the front is priced at 159.99 / $229.90 / 169.90 / AU$289.Flowbio S1 SensorThe Flowbio S1 Sensor is claimed to record your water and electrolyte loss in real time. - Ashley Quinlan / Our MediaFlowbio claims the S1 sensor is the worlds most accurate hydration sensor, and that its clients include WorldTour cycling teams and elite triathletes, such as the Brownlee brothers.Although the link between electrolyte loss and cramping is contentious, the brand promises no cramps, no guesswork.The S1 sensor clips into your heart-rate monitor chest or arm strap. Unlike some continuous glucose monitors, the S1 Sensor does not have a needle.Instead, Flowbio says the S1 sensor collects sweat in a tiny channel through pressure exerted by your sweat glands.You can wear the S1 sensor on heart-rate monitors with chest or arm straps. - Ashley Quinlan / Our MediaFrom an eight-second sample of this sweat, the S1 uses an algorithm to estimate how much fluid and sodium you are losing overall. This is 90 per cent as accurate as a lab test, according to Flowbio. The brand says its companion app recommends what to drink before, during and after training sessions and races to help you stay hydrated on your bike. Unfortunately for Android users, the app is only available on iOS, Apples software.The S1 has ANT+ and Bluetooth connectivity and can send real-time data to your bike computer. You can also sync the device with your Zwift and Training Peaks accounts.Flowbio claims the battery lasts for 100 hours and is USB-C rechargeable.329 Oakley Aro 5 Race Ice MIPS HelmetThe new Aro 5 sits lower on the head and is better ventilated, according to Oakley. - Scott Windsor / Our MediaThe Oakley Aro 5 Race Ice MIPS is a lightweight, well-ventilated yet aerodynamic helmet, according to the brand.Oakley claims the revamped ventilation ports improve airflow, while a redesigned shell saves weight compared to its predecessor, the Aro 5.Passers-by can access information about you if you crash, by tapping on the Twiceme logo. - Scott Windsor / Our MediaThe new shell shape helps the cycling helmet sit lower and fit better to the contours of your head, according to Oakley.You can, of course, store cycling sunglasses in the front vents of the MIPS-equipped helmet.The Aro 5 Race Ice MIPS also incorporates Twiceme Help the Helpers technology. If you are unresponsive after a cycling crash, bystanders can double-tap the Twiceme logo with their smartphone to access information, such as next-of-kin contact details, youve uploaded.195 / 230 Wolf Tooth EnCase PumpThis is the 40cc size and a larger 85cc option is also available. - Scott Windsor / Our MediaWolf Tooth says the EnCase Pump has a high stroke volume, internal storage and best-in-class protection from water and grit.Each stroke requires less force than its competitors when inflating high-volume mountain bike tyres and gravel bike tyres, according to the brand.Tubeless tools can be stored inside. - Scott Windsor / Our MediaThe EnCase Pump doesnt have a hose, thread or locking lever. Therefore, Wolf Tooth claims you can start pumping quicker when you get a tubeless puncture and you wont damage your Presta valve core.It can also store tools, such as a tubeless tyre repair kit and multi-tool, in an internal compartment.The mini pump comes in a 40cc size costing 59 / $72 / 69 / AU$115and larger 85cc size, priced at 63 / $77 / AU$120. You can carry both on your bike attached to the supplied bottle cage mount.