When the M-frame including thru-axle (68 g) and quick-release saddle clamp weighed 1970 grams on the scales during the test, we were briefly taken aback. However, the total weight of 9.8 kilos (with tubes) still fulfils our high expectations. Visually, the race bike no longer has much in common with its predecessor: the rear shock is now super compact and low in the main frame, the rear linkage has disappeared and you won't find a front derailleur mount. Despite the large saddle extension, you sit low and surprisingly comfortably between the wheels. The modern geometry with longer reach, short stem and low front is also pleasing. A nice side effect of the repositioned metric rear shock: the lower top tube and more legroom. When flying low over winding forest trails, the Spark RC plays its Twinloc trump card: With a click of the thumb on the handlebar lever, the 100 sensitive millimetres of travel can be tightened to 70. The stiff carbon-fibre full-suspension bike responds to every steering command with directional stability and super directness. Even at high speeds, the lightweight Fox fork smacks its way through the roots. Overall, the Spark remains much smoother downhill than the old model, thanks to more reserves in the rear triangle and a slacker steering angle. One small drawback: you can't carry more than a large bottle.
