SDG Components Bel-Air V3 Terra Firma
Bel-Air V3 Terra Firma
Bel-Air V3 Terra Firma
SDG Components

SDG Components Bel-Air V3 Terra Firma

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The SDG Bel-Air V3 Terra Firma is a lightweight, artist-collaboration MTB saddle with a hidden cutout, free-float comfort flex and Kevlar cover for durable all-mountain performance.

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Product Details

Overview & Technology

SDG's Bel-Air V3 Terra Firma blends modern saddle tech with a unique artistic finish by Johan Johnston of Hasie & The Robots. Built for mountain biking, this limited-edition saddle pairs a light-weight injection-molded EVA foam core with a three-piece Kevlar cover in the Hasie Olive camo-inspired graphic for standout style and durability. The saddle features a hidden cutout relief under the base to reduce perineal pressure without compromising the shell’s strength, plus SDG's Free Float comfort flex that lets the shell flex naturally as you pedal. Lux-Alloy rails keep weight down (295g) while offering reliable support and simple clamp compatibility for most MTB seatposts — and it's e‑bike approved for heavier-assist setups.

Key Features & Real-World Benefits

Performance-driven details: a slight rear-rise platform delivers a stable seated position for powerful pedaling and sustained climbs, while the wider nose float platform improves control and comfort when you’re out of the saddle. The hidden cutout reduces hotspots and numbness on long rides without sacrificing the saddle’s load-bearing zones. The three-piece Kevlar cover resists abrasion and sheds mud, while the injection-molded EVA foam balances cushion with responsiveness. In practice this means confident long descents, efficient power transfer on climbs, and a predictable, comfortable feel in technical singletrack.

Fit, Compatibility & Construction

The Bel-Air V3 Terra Firma measures 260 x 140 mm and weighs approximately 295 g, making it a mid-width, all-mountain MTB saddle suited to a broad range of riders. Lux-Alloy rails provide strong, lightweight support and fit standard two-bolt saddle clamps and most dropper post heads. The saddle is marked e-bike approved, so it’s tested to withstand the higher loads associated with electric-assist riding. Construction highlights include a traditional molded base with protective bumpers, a hidden cutout relief beneath the foam for pressure relief, and a three-piece Kevlar top that offers extra tear-resistance at high-wear contact points. Installation is straightforward — align, clamp at the rails, and set your saddle setback and tilt to rider preference.

Who It's For

This saddle is tailored to mountain bikers who want a reliable, versatile perch with added style. It's ideal for riders who spend long hours in the seated position and need pressure relief without losing pedaling efficiency — trail riders, cross-country enthusiasts who enjoy technical climbs, and all-mountain riders running e-bikes or heavier setups. The artist collaboration and Hasie Olive finish also make it a great choice for riders who care about aesthetics as much as function — you get proven SDG ergonomics and the kind of limited-edition look that stands out on the trail.

Key Features

  • Limited Johan Johnston "Hasie Olive" artist collaboration graphic
  • Hidden cutout relief under the base reduces perineal pressure
  • Free Float comfort flex enhances pedaling efficiency and comfort
  • Lightweight injection-molded EVA foam core for responsive cushioning
  • Lux-Alloy rails — strong, lightweight and compatible with most clamps
  • Three-piece Kevlar cover for abrasion resistance and mud shedding
  • Slight rear-rise platform and wider nose improve seated power and climbing
  • Compact 260 x 140mm dimensions, 295g saddle weight, e‑bike approved

Specifications

Gender Unisex
Intended Use MTB
Color Hasie Olive
Primary Color Green
Cut Out Yes
Saddle Cover Material Microfiber
Saddle Dimensions 260 x 140mm
Rail Material Lux-Alloy
Saddle Weight 295g
e-Bike approved Yes

Product Identifiers

Vendor Item # 06228
UPC 812367018891

Frequently Asked Questions

Is the Bel-Air V3 Terra Firma suitable for dropper posts?

Yes — the Lux-Alloy rails are compatible with standard two-bolt saddle clamps used on most dropper posts. Always ensure you clamp on the rails within the marked safe zone to avoid damage.

How does the hidden cutout differ from a top cutout?

The hidden cutout sits beneath the foam and shell rather than an open groove on top. It provides similar pressure relief while maintaining a continuous top surface and extra protection from debris and wear.

How do I clean and care for the Kevlar cover?

Wipe the Kevlar microfiber cover with a damp cloth and mild soap if needed. Avoid soaking the saddle or using harsh solvents. The three-piece design helps water and grime shed quickly, but regular wiping keeps the print and material looking fresh.

Is this saddle unisex — will it fit all riders?

The Bel-Air V3 Terra Firma is designed as a unisex MTB saddle. The 260 x 140mm profile suits many riders, though personal comfort depends on sit-bone width and riding style. If you’re unsure, measure your sit-bone width or consult our saddle fit guide.

Can I use this saddle on an e‑MTB?

Yes. This model is e-bike approved and tested to handle the increased loads associated with electric-assist bikes. Ensure correct installation and regular inspection of rails and mount points on higher-torque setups.

How long is the break-in period for the EVA foam?

Break-in is generally minimal — the injection-molded EVA foam offers responsive cushioning from day one. Expect subtle softening over the first few rides as the foam and cover settle to your riding position.

Buying Guide

When selecting a mountain bike saddle look for a balance of width, cutout design, and padding that suits your riding style. Measure your sit-bone width to choose the right saddle width; a mid-width 140mm like the Bel-Air V3 Terra Firma suits many all-mountain and trail riders. Consider rail material (Lux-Alloy is lightweight and strong) and whether the saddle is rated for e-bike use if you ride an electric-assist bike. Evaluate features such as rear-rise platforms for seated power, nose shape for climbing comfort, and cover materials for durability. Artist collaborations like the Hasie Olive finish add personality without compromising performance — ideal if you want both functional comfort and standout style on the trail.

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