So weight has gone down, but frame lengths have gone up, and the new Stumpjumper gets the ‘S’ size designation introduced on the Stumpy Evo and adopted by the Specialized Enduro and Specialized Turbo Kenevo. It’s a trick that many short travel trail bikes have used to save weight and simplify production, including the Specialized Epic Evo and Epic XC bikes. With 130mm – 10mm less than previously – out back, any variation in angle at the swinglink and main pivot can be accounted for by the engineered flex stays. A chunk of change (55g according to Spesh) has been lost by getting rid of Specialized’s signature Horst link – a move that might seem blasphemous to most aficionados, but makes absolute sense when combined with the new Stumpy’s reduced travel.
Slightly disappointing then, that our complete Expert S4 test bike weighed 13.63kg, or just over the 30lb threshold, although it’s still nearly 500g lighter than the Expert Carbon 29 we tested last year. That’s right up there with other minimal trail bikes such as the Scott Genius Tuned (2,249g) and Transition’s Spur (2,450g). Either way, the new Stumpjumper frame is, according to Specialized, over 100g lighter than the old model, while the top end frame with shock and hardware in size S4 is a claimed 2,420g (alloy frame 3,490g). You’ll hear a lot about weight saving with the new Stumpjumper, perhaps as a reaction to average trail bike weights breaching 30lbs on a regular basis now, and perhaps to keep the Stumpjumper more relevant compared to the lightweight ebike option Specialized Turbo Levo SL. New one-piece swingarm saves 55g by ditching the Horst link and uses a flex ‘zone’ along the seatstay A bit more Epic, a lot less Stumpy
0 kommentar(er)
