SDG Components Bel-Air V3 Terra Firma

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The SDG Bel-Air V3 Terra Firma is an artist-edition mountain saddle combining lightweight EVA foam, a durable 3-piece Kevlar cover and a pressure-relief cutout for all-day trail comfort. At 295g with Lux-Alloy rails and e‑bike approval, it balances pedaling efficiency and cushioning.

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Product Details

Overview & Technology

SDG's Bel-Air V3 Terra Firma is an exclusive artist collaboration with Johan Johnston of Hasie & The Robots, blending bold graphics with proven saddle technology for mountain riders who want style and substance. The 3-piece Kevlar cover displays Johan’s unique camouflage-inspired artwork while delivering abrasion resistance where it matters most. Under the cover the saddle uses light-weight injection-molded EVA foam and a traditional reinforced base with bumpers for impact durability. A hidden cutout relief under the base reduces perineal pressure without compromising the saddle’s structural integrity, and the Free Float comfort flex platform lets the shell flex under pedaling loads to improve efficiency and reduce hotspots on long climbs and technical descents.

Key Features

This saddle is engineered for practical trail use: Lux-Alloy rails offer a strong yet lightweight mounting solution, the wider nose float platform aids seated climbs, and the slight rear-rise platform helps lock your pelvis for powerful pedal strokes. At 260 x 140mm and 295g, it’s a mid-width, mid-weight option that suits a broad range of riders. • 3-piece Kevlar cover — durable, grippy, and showcases the Hasie Green artwork. • Injection-molded EVA foam — light, supportive cushioning that resists compression over time. • Hidden cutout relief — pressure relief without an obvious top-depression for a cleaner look. • Free Float comfort flex — engineered flex for reduced pressure and improved pedaling efficiency.

Fit & Compatibility

The Bel-Air V3 Terra Firma is a unisex saddle sized at 260 x 140mm, offering a versatile platform for riders with medium sitbone widths. The slightly raised rear suits aggressive trail and cross-country positionings while the wider nose float helps seated climbing efficiency. At 295g, it fits the weight-conscious rider who still wants durable materials. The Lux-Alloy rails are compatible with most standard saddle clamps, including dropper posts and e-bike seatpost heads; the saddle is explicitly e-bike approved. As with any saddle, optimal fit depends on sitbone width, riding posture and personal preference — we recommend measuring sitbone width and comparing it to the saddle platform for the best outcome.

Who It's For

The Bel-Air V3 Terra Firma is aimed at mountain riders who want a performance-oriented saddle with an eye-catching, limited-edition aesthetic. It’s perfect for aggressive trail riders, bikepackers who value durability, and riders on e-MTBs who need an e-bike-approved saddle that won’t fail under higher torque loads. If you value mid-weight construction, a resilient cover, and a comfortable pedaling platform with pressure relief — plus the cachet of an artist collaboration — this saddle is a great pick. Riders who need an extremely wide platform or maximum ultra-soft padding may prefer alternative shapes, but the Bel-Air strikes a strong balance for most trail-focused cyclists.

Key Features

✓ Exclusive Johan Johnston artist collaboration with unique Hasie Green graphic
✓ Mid-width 260 x 140mm platform balances control and mobility
✓ Lightweight injection-molded EVA foam for consistent cushioning
✓ 3-piece Kevlar cover: abrasion resistant and grippy finish
✓ Lux-Alloy rails provide durable, lightweight mounting
✓ Hidden under-base cutout for targeted pressure relief
✓ Free Float comfort flex improves pedaling efficiency
✓ E‑bike approved for higher torque trail use

Specifications

Gender	Unisex
Intended Use	MTB
Color	Hasie Green
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 #	06225
UPC	812367018860

Frequently Asked Questions

What sitbone width suits this 260 x 140mm saddle?

The 260 x 140mm platform typically fits riders with medium sitbone widths. If your sitbones are narrow you may prefer a 250mm saddle, and if they are wide look for 275mm+ options. Measure your sitbone width and add approximately 20–30mm to find your ideal saddle width.

Is the hidden cutout as effective as a visible center relief?

Yes — the Bel-Air V3 uses a hidden relief under the base that reduces perineal pressure without a pronounced top depression. This maintains a cleaner top surface while still delivering the medical and comfort benefits of targeted pressure reduction during long rides.

Will this saddle fit my dropper post and seat clamp?

The Lux-Alloy rails are compatible with most standard saddle clamps and dropper post heads. If you have an unusual clamp (non-standard width or proprietary interface), check your clamp spec sheet or measure the rail spacing and diameter. When in doubt, bring the saddle to your local shop for a dry fit.

How durable is the 3-piece Kevlar cover?

The 3-piece Kevlar-reinforced cover is highly abrasion-resistant and designed to handle repeated use, roost, and strap contact from bikepacking. It provides extra tear resistance compared to standard microfiber, extending the saddle’s usable life in demanding trail conditions.

Is this saddle suitable for e‑MTBs?

Yes — the Bel-Air V3 Terra Firma is e-bike approved. Its construction withstands the higher torque and sustained climbs associated with e-MTBs, though correct installation and clamp compatibility should still be checked to ensure a secure fit.

How long is the break-in period?

Break-in varies, but most riders notice improved comfort within 50–150 km as the cover settles and the foam adapts to their mounted position. The EVA foam is molded to maintain support while conforming slightly with use, so you should see gradual improvements rather than major changes.

Buying Guide

Choosing a mountain bike saddle is about matching platform width to your sitbone spacing, selecting the right balance of padding and support, and ensuring rail compatibility with your seatpost. For technical trail riding, look for a slightly rear-rising profile and a durable cover—features the Bel-Air V3 Terra Firma provides. Consider intended use: long cross-country rides favor lighter, firmer saddles while enduro and all-mountain riders may prefer more durable construction and a grippier surface. Always check e‑bike approval if you ride an electric-assist bike, and allow a short break-in period for the foam and cover to settle for optimal comfort.

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