6 Minutes
Indonesia’s custom motorcycle scene keeps producing headline-making builds, and Bali-based Treasure Garage — led by Imanuel Prakoso — is one of the most influential names on that list. Their latest project takes a 2013 BMW G 650 GS and transforms it into a one-off that sits perfectly between a streetfighter and a supermoto. The result is aggressive, purposeful and impeccably finished — a bike that illustrates why Indonesian metal fabrication and custom paintwork are in global demand.
Design and Fabrication
Treasure Garage stripped the G 650 GS down to its bones and rebuilt the bodywork from the ground up. The centerpiece of the transformation is a handmade trellis subframe that shortens and slims the rear end, dramatically altering the bike’s proportions. That subframe is wrapped in bespoke side panels and finishes with a compact, integrated tail section that includes a custom LED taillight assembly. A minimalist license plate holder and small LED indicators tidy the rear without distracting from the lines.
Bodywork and Styling
The team crafted an angular front fairing and a high-mounted fender as a single unit that frames a stacked twin-LED headlight layout — a modern touch that nods to both supermoto and streetfighter aesthetics. A custom fuel-tank cover broadens the bike’s shoulders and pushes the visual mass forward, while sharp side panels with integrated blinkers maintain the sculpted theme. The underside is protected by a boxy, hand-formed belly pan with a mesh intake for added cooling and visual aggression.
Cockpit and Ergonomics
Treasure Garage retained the G 650’s factory instrument cluster but replaced the controls and stance for a more performance-oriented feel. A low-rise ProTaper handlebar sits on aftermarket risers and is paired with bar-end mirrors. A billet quick-action filler cap, custom serrated foot pegs and a bespoke saddle — featuring two types of upholstery and contrasting green stitching — round out the cockpit upgrades, delivering both function and style.
Chassis, Brakes and Wheels
Handling was a major focus. The stock telescopic forks were removed and swapped for upside-down units sourced from a Ducati Hypermotard, improving front-end rigidity and response. The front brake setup was upgraded to large floating discs clamped by radial Brembo calipers, replacing the BMW’s original braking hardware for significantly stronger stopping power.
Treasure Garage also replaced the OEM wheels with repurposed 17-inch hoops from a Yamaha YZF-R25, fitted with Pirelli Angel GT tires — a combination that improves on-road grip and gives the bike a more planted, sporty demeanor.
Powertrain and Exhaust
The G 650 GS’s single-cylinder engine remains the core of this build, complemented by a handmade exhaust system. Heat-wrapped headers route to a pair of Akrapovic mufflers tucked under the tail, which not only cleans up the rear profile but also enhances exhaust tone and reduces weight. While Treasure Garage focused on sound and packaging rather than radical engine tuning, the lighter exhaust and chassis changes are likely to improve the bike’s throttle responsiveness and real-world performance.
Paint, Finishes and Visual Impact
Unlike many builders who treat paint as an afterthought, Treasure Garage invested heavily in the finish. A vivid green dominates the bodywork, offset by BMW M-inspired graphics and extensive matte-black accents that emphasize the machine’s sharp lines. The color palette enhances the bike’s forward-leaning, aggressive stance and ensures it stands out whether parked at a show or carving twisty roads.
Vehicle Specifications (Build Highlights)
- Base model: BMW G 650 GS (model-year 2013)
- Engine: BMW single-cylinder (retained stock platform; custom exhaust)
- Subframe: Custom trellis subframe with handmade side panels
- Front suspension: Upside-down forks from Ducati Hypermotard
- Brakes: Large floating front discs with radial Brembo calipers
- Wheels/tyres: 17-inch Yamaha YZF-R25 wheels with Pirelli Angel GT tires
- Exhaust: Hand-fabricated headers with Akrapovic mufflers
- Cockpit: ProTaper low-rise handlebar, aftermarket risers, bar-end mirrors
- Lighting: Custom LED headlights and LED taillight assembly
- Notable finishes: Custom green paint, BMW M color graphics, matte-black accents
Performance and Ride Character
While this G 650 GS isn’t about chasing headline power figures, the combination of lighter bodywork, upgraded suspension and braking components produces a more agile, confidence-inspiring ride. The Hypermotard forks improve front-end feel and stability when braking into corners, while the Brembo calipers and larger discs give the rider real stopping authority. The Akrapovic mufflers and heat-wrapped headers add character to the single-cylinder note and reduce overall exhaust mass.
Market Positioning and Comparisons
Treasure Garage’s build targets enthusiasts who want a bespoke, street-practical machine with supermoto agility and streetfighter aggression. Compared with purpose-built supermoto bikes, this conversion retains the G 650 GS’s upright ergonomics and longer-travel heritage while delivering sharper handling and a sportier silhouette. Against modern naked bikes, it offers distinctive custom appeal and craftsmanship that mass-produced models can’t match.
Conclusion
This custom BMW G 650 GS from Treasure Garage is a compelling example of contemporary motorcycle customization: technical metalwork, carefully chosen performance parts and a striking visual identity. It raises the bar for what a compact, single-cylinder platform can become when a skilled workshop blends supermoto geometry with streetfighter attitude. For riders and collectors looking for a unique, high-quality build that performs as well as it looks, this Beemer is a standout.
Source: autoevolution
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