Alpitude - Tonale Seatpost for Cervelo R5 Layup:3K Twill › Compatible with both 7×7

› Compatible with both 7×7 mm round and 7×9 mm oval carbon rails

Is the E-Series a comfort saddle

8mm Centre width 420mm bar = 55mm 440mm bar = 65mm

40 grams for 15mm RAT

The P-Series uses oval carbon rails

Alpitude - Tonale Seatpost for Cervelo R5 Layup:3K Twill › Compatible with both 7×7Tonale Seatpost for Cervlo R5 If you want to take weight out of your Cervlo R5 without compromising the look of the bike, the Tonale Seatpost is one of the cleanest upgrades you can make. Built specifically for the Cervlo R5, the Tonale is made from high quality carbon fibre using high pressure moulding with an internal silicone bladder. That process helps deliver a smooth finish inside and out, along with the low weight you want from a premium