Prologo Dimension R2 Saddle for Road & Gravel, 143mm, Tirox

Prologo Dimension R2 Saddle for Road & Gravel, 143mm, Tirox .

The Prologo Dimension R2 is the new flagship of one of the most successful saddle families in modern cycling. At just 135 grams with a Nack rail — a 13% weight reduction over the previous Dimension 143 — the R2 sets a new benchmark for what a high-performance ergonomic saddle can weigh without compromising support, comfort, or precision. Compact at 245 × 143mm and genuinely multidisciplinary, it's equally at home on a road race bike, a gravel rig, or an XC/Marathon mountain bike.

135 Grams. 13% Lighter. Zero Compromise.

Prologo's relentless pursuit of performance drove a complete redesign of the Dimension platform. A new EVA foam formulation allowed a 1mm reduction in rear padding thickness — 20% less than the previous model — cutting weight while maintaining the saddle's signature support and comfort profile. The result is the lightest Dimension ever produced, built for professionals and demanding amateurs who count grams and feel every watt.

Redesigned Nose — Wider, More Comfortable Under Load

The Dimension R2 features a completely redesigned 40mm nose — 6% wider than its predecessor — with a more rounded side profile. This geometry was developed specifically to increase comfort during maximum pedaling efforts, reducing pressure and friction on the inner thigh when the power is fully on. It's a detail that matters most precisely when you need it most.

V-Shape Geometry & Flat Profile — Locked In, Positioned Forward

The V-shape of the Dimension R2 minimizes unwanted lateral movement and keeps you precisely positioned on the saddle surface at all times. The advanced anatomical center encourages a forward seat position for maximum pedaling efficiency, while the flat profile supports an aggressive, aerodynamic riding position — ideal for riders with good pelvic flexibility who spend time at the front of a race or chasing down segments.

PAS Channel — Open, Pressure-Free

The open PAS (Perineal Area System) channel runs centrally through the saddle to eliminate pressure peaks and numbness in the perineal zone, maintaining blood flow during long and intense efforts. Combined with the refined V-shape geometry, the Dimension R2 delivers ergonomic performance that holds up across road races, gravel epics, and multi-hour XC events alike.

Technical Specifications

• Dimensions: 245 × 143 mm
• Shape: V-shape, flat profile
• Nose Width: 40mm (6% wider than previous model)
  
• Weight (Tirox Rail): 171g
  
• Base: Injected carbon (Tirox)
• Padding: New EVA foam, rear padding reduced 20% vs. previous model
• Pressure Relief: Open PAS (Perineal Area System) channel
• Intended Use: Road, Gravel, XC/Marathon MTB