Specialized Tarmac SL8 Review
August 07, 2023
Lighter, stiffer, faster – but also better? At Glasgow’s UCI World cycling championships we had the opportunity to take a close look at Specialized’s latest all-purpose aero weapon, the Tarmac SL8 2024. Specialized officially launches the Tarmac SL8 — faster than the Venge, stiffer and lighter than the SL7, and all-new 'speed sniffer' head tube. Riding Specialized means riding superlatives, at least in terms of marketing. But is the Specialized Tarmac SL8 a revolutionary new take on road cycling? True to the motto “One Bike to Rule Them All”, Specialized continue to push the boundaries in an attempt to create the ultimate all-round racer. This time, however, the American manufacturer really means business, presenting what’s meant to be not only the lightest, but also the fastest bike in the peloton. To make this possible, Specialized combined the Venge’s head tube and the Aethos’ bottom bracket area. According to Specialized, the frame weighs less than 700 g and is also faster than the Venge aero weapon, which is admittedly getting on in years. With the release of the Tarmac SL7 back in 2020, Specialized declared the Venge deceased, and with it the era of aero bikes. Three years on, however, it seems that not all manufacturers got the memo. The trend of assigning different roles to bikes is making a comeback. The Factor O2 VAM and the new Orbea Orca focus on lightweight construction, while Scott’s Foil is aimed at speed junkies. Only Cannondale’s new Supersix remains true to its all-round roots. Sure, Specialized have the Aethos, but calling it a road bike is a bit of a stretch. Now the question is:do all-rounders still fit into the picture? The original point remains valid: while all-rounders are probably still the faster bikes, they’re inferior to the specialists in their respective fields. Perhaps, it makes more sense to follow the example of the Jumbo Visma pros and choose the best bike for the job, rather than opting for an all-purpose weapon. For hobby riders like us, the choice isn’t always easy, and very few of us have the luxury of choosing between several bikes. At first glance, it’s evident that the SL7 and SL8 are heading in the same direction. In purely visual terms, not much has changed, except for the head tube, which is now significantly lower. In times when every brand seems to have created a lighter, stiffer and, of course, faster bike, how do Specialized back up their claim? In a nutshell, they used the experience gathered in lightweight construction while developing the Aethos and mixed it with some “new” old aero know-how and the optimised carbon layup used for their latest road bike. While they were at it, they also improved the aerodynamics in three areas. The most significant and noticeable change is the head tube. As seen on the Venge and aero bikes from 3T and Cannondale, the head tube extends further forward. This ensures a pointier shape and at the same time allows for a cleaner transition from the top tube to the down...
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