Test 2023 - All Mountains up to 3300 Euro: YT Jeffsy 29 Core 2 - test winner
Jan Timmermann
· 06.03.2023
It's been three years since YT last worked on the aluminium frame of the Jeffsy. It is therefore hardly surprising that the current Core 2 model also suffers from a well-known problem: From shoe size 41 upwards, the space between the heel and the overhanging seat stays becomes tight, which means unsightly scuff marks on the frame.
on the frame.
Uphill upright-relaxed - but cosy
In the slack flip-chip setting, the YT pedals less efficiently than other bikes in the comparison. The bobbing of the rear suspension is present, but remains acceptable and can be completely eliminated via the platform lever. With a high cockpit, the riding position is upright and relaxed. The Jeffsy is also a comfortable climber due to its considerable weight.
The YT Jeffsy Core 2 steers extremely intuitively downhill. Bikers are centred and well integrated in the frame. A short seat tube and low standover height also provide safety in narrow and steep passages - also interesting for smaller riders.
Downhill uncomplicated - fine chassis
Except for very flat trails, the Jeffsy can score points in any terrain. On flat terrain, the bike is rather sluggish due to its weight and active suspension. However, the riding fun increases with speed. Even at high speeds, the handling remains uncomplicated despite the short reach and steeper steering angle and offers full control at all times.
The suspension is sensitive and plush on the trail. The rear suspension never gives you the feeling of too little travel and has sufficient reserves even on fast, hard hits. This is where it pays off that YT relies on high-quality suspension elements despite the bargain price. For comparison: The top model, which is around 1.7 kilos lighter YT Jeffsy Core 4 costs just under 2200 euros more. Heavy riders benefit from the high frame rigidity and the large brake discs.
Test YT Jeffsy 29 Core 2: Conclusion of the BIKE editorial team
The YT shows its strengths particularly at high speeds downhill. The suspension reserves are high and the handling is intuitive. However, touring is only possible at a leisurely pace. - Jan Timmermann, BIKE tester
Technical data and notes YT Jeffsy 29 Core 2
Manufacturer information
- Price: 2999 Euro¹
- Available by mail order
- Frame material: aluminium
- Frame size: S / M / L / XL / XXL (tested in size L, 45 cm)
Measured values
- Weight without pedals: 15.78 kg
- Frame weight without shock: 3473 g
- Weight of wheels: 5594 g
- Handlebar width: 780 mm
Equipment
- Fork: Fox 36 Float Performance
- Front/rear suspension travel: 150/152 mm
- Shock: Fox Float X Performance
- Cranks: Truvativ Descendant
- Gear system: Sram NX Eagle 1 x 12
- Gear ratio / bandwidth: 32; 11-50 / 454 %
- Brake system / Disc (front / rear): Sram G2 R / 200 mm / 200 mm
- Telescopic post / stroke / diameter: YT Postman / 150 mm / 31.6 mm
- Wheels: DT Swiss M 1900 Spline
- Tyres: Maxxis Minion DHR II Exo TR 29 x 2.40
- Ease of maintenance: weak
BIKE TEST RATING²: good - 174.5 out of 250
¹Price may be subject to additional costs for packaging, dispatch and coordination.
²The BIKE judgement reflects the laboratory measurements (BIKE laboratory measurement) and the subjective impression of the test riders.
The BIKE judgement is independent of price. BIKE judgements: super (250-205 P.), very good (204.75-180 P.), good (179.75-155 P.), satisfactory (154.75-130 P.), with weaknesses (129.75-105 P.), unsatisfactory (104.75-0 P.).
Jan Timmermann
Editor
