In a recent review, Singletracks.com takes a close look at the 2015 Polygon Syncline 9, describing it as Polygon’s most focused and aggressive XC hardtail mountain bike to date. First introduced at Sea Otter, the Syncline is positioned as a race-ready mountain bike built around a light, stiff carbon frame and Polygon’s long-standing experience with 27.5-inch wheels.
According to Singletracks, the 2015 Syncline 9 delivers a ride that feels “fast, snappy, and aggressive,” particularly in terrain that rewards quick acceleration and precise handling. Rather than pushing extreme geometry, Polygon opted for a familiar XC layout with carefully considered refinements.
Balanced Geometry with a Stability-First Feel
Singletracks notes that the MTB’s geometry stays within the norms of the XC hardtail category, while subtle details enhance trail confidence.
A longer wheelbase for a 27.5-inch hardtail, combined with short chainstays and a relatively slack 69-degree head tube angle, contributes to improved stability when descending technical terrain without sacrificing agility.
On paper, the Syncline’s numbers compare closely to other proven XC race mountain bike platforms, reinforcing Polygon’s focus on refinement over experimentation.
Top-End XTR Build and Clean Component Choices
The 2015 Syncline 9 represents the top tier of Polygon’s XC lineup and features a full Shimano XTR Di2 drivetrain, XTR brakes and wheels, and a Fox 32 Float Factory fork with remote CTD adjustment. Singletracks highlighted the drivetrain’s precise and smooth shifting during early rides, while acknowledging cautious optimism around electronics in off-road use.
Premium Ritchey Superlogic carbon cockpit components and a Fizik Tundra saddle complete a build that feels cohesive and performance-driven.
Quick Acceleration and Easy Adaptation on Trail
Early ride impressions from Singletracks emphasize how quickly the 2015 Syncline 9 felt familiar. The low standover, balanced reach, and 27.5-inch wheels delivered noticeable responsiveness and maneuverability, especially in tight trails and short, punchy efforts.
A Confident XC Statement from Polygon
As reviewed by Singletracks.com, the 2015 Polygon Syncline 9 stands out as a well-executed XC hardtail MTB, combining a capable carbon frame, thoughtful geometry, and race-ready components.
It’s a clear reflection of Polygon’s growing presence in the performance mountain bike segment, delivering speed, control, and purpose in a clean, no-nonsense package.
Read the full review by Singletracks here
For riders looking to upgrade, race, or simply experience how modern mountain bikes are engineered today, the current Polygon MTB lineup offers a clear window into where the brand is heading, combining speed, control, and versatility across a wide range of riding styles.
Explore the latest Polygon mountain bikes and see how the brand continues to push forward in the global MTB landscape.
