Our 29er test bike performs quite unspectacularly in the lab. The weight is slightly above average, which is due to the rather heavy frame and by far the heaviest wheels in the comparison. Due to the higher inertia of the wheels, the Jeffsy is not quite as lively on the throttle and requires more effort to accelerate. The riding position is very comfortable thanks to the high cockpit. A different handlebar or stem would provide more pressure on the front wheel. Despite the long chainstays, the Jeffsy is more playful and manoeuvrable than most of the 29ers in this test. With the shock open, the rear suspension pumps only slightly when pedalling. However, we weren't convinced by the suspension on the descents, as it didn't provide much composure compared to other bikes. The rear suspension with the Rockshox Monarch shock didn't manage to follow the ground and therefore didn't build up much traction.
Test summary: Playful 29-inch all-mountain bike with good, but not the typical above-average spec. The suspension quality was not convincing.
YT Industries Jeffsy 29 AL Comp / 29"
available at Mail order business
Price 2799 Euro
Material / Sizes Aluminium/ S / M / L / XL (48.5 cm)
Weight o. P. / frame 14.08 kg / 3141 g
Fork / damper Rockshox Pike RC / Rockshox Monarch RT
Cranks / gears Race F. Turbine / Shim. SLX 11-speed
Gear ratio / handlebar width 32; 9-46 / 780 mm
Brake system / Disc Sram Guide RS / 200/180 mm
Telescopic support Thirteen TRS+ / 150 mm / 31.6 mm
Impellers DT Swiss M 1900 Spline system wheels; Maxxis Minion DHR2 Exo WT 29 x 2.4 tyres
Reach / Stack / BB-Offset 443 / 622 mm / -31 mm
BIKE judgement VERY GOOD¹
¹Price plus costs for packaging, dispatch and coordination if applicable
²The BIKE judgement reflects the laboratory measurements and the subjective impression of the test riders. The BIKE judgement is independent of price.
BIKE judgements: super (250-205 P.), very good (204.75-170 P.), good (169.75-140 P.), satisfactory (139.75-100 P.), with weaknesses, unsatisfactory. The weighting of the points in the individual assessment criteria varies depending on the bike category.
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