Selle SMP
Selle SMP Hybrid Saddle | Stainless Steel Rail Bike Seat
Selle SMP Hybrid Saddle | Stainless Steel Rail Bike Seat
52 in stock
100% authentic Italian craftsmanship from Padova, Italy with official factory warranty.
Over 340 saddles in US warehouse stock. Ships same or next business day with live tracking.
Official Selle SMP 2-Year factory warranty coverage + dedicated US customer support.
Saddle Fit & Sit Bone Guide
How to measure sit bones: Place a piece of corrugated cardboard on a firm chair. Sit normally for 30 seconds, then stand. Measure the distance between the centers of the two indentations. Add 20–25 mm for road cycling saddles. This is your optimal saddle width.
Selle SMP Saddle Width & Sit-Bone Guide
Official Selle SMP Technical Specification Reference
| Model | Dimensions | Sit Bones | Padding Level | Best For |
|---|---|---|---|---|
| Evolution | 129 x 266 mm | 9.0 – 11.5 cm | Foamed Elastomer (Light) | Road, Gravel, Cyclocross endurance |
| Composit | 129 x 263 mm | 9.0 – 11.5 cm | None (100% Unpadded) | Road race, TT, Track (Shell Flex Comfort) |
| Dynamic | 138 x 274 mm | 11.6 – 15.0 cm | Foamed Elastomer (Light) | Performance Road, Gravel, MTB, Triathlon |
| Forma | 137 x 273 mm | 11.6 – 15.0 cm | None (100% Unpadded) | Same shape as Dynamic, zero padding feel |
| Avant | 154 x 269 mm | 12.1 – 15.0 cm | Foamed Elastomer (Thick) | Wide sit bones, All-day endurance & Touring |
| EVO / EVO Plus | 140 x 267 mm | 9.0 – 13.0 cm | Technical EVA (Thin / Med) | Gravel, Road, Modern Flat-Top Ergonomics |
| F20C s.i. | 135 x 250 mm | 9.0 – 11.5 cm | Minimal (Short Nose) | Criterium, Road, Aggressive Aerodynamic Drops |
| EXTRA | 140 x 275 mm | 9.0 – 11.0 cm | Soft Polyurethane (Thick) | Road, Fitness, Commuting (FeC30 Steel Rail) |
| Hybrid | 140 x 275 mm | 9.0 – 12.0 cm | Soft Polyurethane (Thick) | Road, MTB, Gravel (AISI 304 Stainless Rail) |
| Chrono | 124 x 250 mm | 9.0 – 11.5 cm | None (100% Unpadded) | Time Trial, Track, Junior / Small Pelvis |
| Carbon Racing | 129 x 263 mm | 9.0 – 11.5 cm | None (100% Unpadded) | 100% Unidirectional Carbon (165g / 120g) |
| Carbon Lite | 135 x 273 mm | 11.6 – 15.0 cm | None (100% Unpadded) | 100% Unidirectional Carbon, Wide (175g / 125g) |
| Full Carbon | 129 x 263 mm | 9.0 – 11.5 cm | None (100% Unpadded) | Pro Race, 105g Carbon Shell & Rails |
| Full Carbon Lite | 135 x 273 mm | 11.6 – 15.0 cm | None (100% Unpadded) | Pro Race, 119g Carbon Shell & Rails (Wide) |
Still unsure? Every Selle SMP saddle features the patented central channel and upturned rear that relieves soft tissue pressure. If in doubt between two models, pick the one matching your primary riding style — road/race or endurance/comfort.
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The Selle SMP Hybrid upgrades the popular Extra shape with lightweight AISI 304 stainless steel tubular rails, shaving 65 grams while adding off-road trail durability. Featuring thick polyurethane padding and the iconic central channel, the Hybrid is built for rugged gravel, road, and mountain bike adventures.
The Four Patented Selle SMP Ergonomic Innovations
Unlike conventional flat or minimally contoured saddles that compress sensitive nerve pathways, every Selle SMP saddle is shaped to conform dynamically to human pelvic anatomy:
- Patented Eagle-Beak Nose ("Becco d'aquila"): The downward-sloping beak provides a stable, flat base when sliding forward into deep aerodynamic drops without crushing genital soft tissue.
- Full-Length Central Relief Channel: Eliminates compression on the pudendal nerve, perineal arteries, and dorsal veins—clinically validated to preserve natural microvascular blood circulation and eliminate numbness.
- Rear Concave Depression: A recessed rear section that isolates the coccyx (tailbone), protecting it from direct contact and road vibration impacts over rough asphalt and gravel.
- Anatomical Ischial Support Shelf: Specially contoured rear surface distributes rider weight squarely onto the ischial tuberosities (sit bones) to maintain proper pelvic alignment and pedaling efficiency.
Anatomical Sit-Bone Fit Guidance
Selle SMP saddles are sized strictly by pelvic width rather than body weight. The Hybrid is engineered specifically for cyclists with:
- Sit-Bone Width (Ischial Tuberosities): 9.0 – 12.0 cm (3.5 – 4.7 in) (Narrow to Medium Pelvis)
- Padding Profile: High / Soft Cushioning (Polyurethane)
- Primary Riding Posture: Road, Gravel, and Endurance drop-bar riding
Technical Specifications
| Dimensions | 140 mm Width × 275 mm Length |
| Sit-Bone Range | 9.0 – 12.0 cm (3.5 – 4.7 in) |
| Padding Level | High / Soft Cushioning |
| Padding Material | Polyurethane |
| Shell / Body | Carbon-Reinforced Nylon 12 |
| Cover | SVT Velvet Touch |
| Weight (Steel) | 300 g (AISI 304 Stainless Rail) |
| Weight (Carbon) | N/A (AISI 304 Stainless Rail Only) |
| Disciplines | Gravel, Road, MTB, Commuting, Fixed Gear |
| Origin | 100% Handcrafted in Casalserugo (Padova), Italy |
How to Set Up & Measure
To verify your sit-bone measurement at home, sit upright on a piece of corrugated cardboard placed on a firm, flat chair for 30 seconds. Measure the distance between the center points of the two depressions in centimeters. Compare against the 9.0 – 12.0 cm (3.5 – 4.7 in) specification above.
Initial Setup Tip: Begin by mounting the saddle completely level using a spirit level placed across the front two-thirds of the hull. Because Selle SMP saddles have an ergonomic upward curve at the tail, fine-tune the saddle tilt by 1 to 2 degrees downward if you feel excess pressure on the pubic ramus when riding in the drops.
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