Delta R-Frame Mast BLEM

The Delta R-Frame Mast BLEM is a cosmetically blemished version of Delta Hydrofoils' integrated R-Frame mast, offered at a reduced price. Delta Hydrofoils, a brand that has been designing and building foils since 2013, developed the R-Frame as a structural departure from traditional multi-piece foil assemblies. Rather than bolting a separate top plate, mast, and fuselage together, the R-Frame consolidates all three into a single carbon fiber part. This eliminates the mast-to-plate and mast-to-fuselage joints — two connection points that are common sources of flex and play in conventional setups. The rear section of the fuselage detaches separately, keeping the system packable for travel despite its integrated design.

As a BLEM unit, this mast carries minor cosmetic imperfections — specifically scratches on the bottom of the base plate near the mounting holes — but is otherwise structurally sound. It ships with two M8 x 25mm Torx screws and protective covers.

• Mast Length: 32" / 82 cm
• Construction: Single-piece carbon fiber (integrated top plate, mast, and front fuselage)
• Rear Fuselage: Detachable for travel
• Included Hardware: Two M8 x 25mm Torx screws, protective covers
• Condition: Cosmetic blemish (base plate scratches)
• Regular Price: $999.00 USD

The R-Frame Mast suits intermediate to advanced foilers who prioritize structural rigidity and are looking to reduce mechanical slop in their setup. By removing two bolted joints from the load path between board and front wing, the integrated design delivers a stiffer connection than a comparable multi-piece assembly. Riders who are sensitive to flex through the mast — particularly during pumping, carving transitions, or riding powered-up in chop — stand to benefit most from this kind of one-piece construction.

The BLEM designation makes this a practical entry point for riders who want to move into the R-Frame system without paying full retail. The cosmetic scratches do not affect performance, so it appeals to riders focused on function over finish. It pairs with Delta's R-Frame fuselage options and their High Aspect front wing lineup, making it relevant for wing foiling, prone foiling, and downwind applications within the Delta ecosystem.

The R-Frame Mast sits at the core of Delta Hydrofoils' R-Frame system, which represents their higher-performance integrated platform. Delta offers complete R-Frame kits — including the High Aspect 1050 R-Frame Kit and the High Aspect 850 R-Frame Kit — that bundle this mast with a front wing, fuselage, and stabilizer. Purchasing the mast separately allows riders already in the Delta system to upgrade from a traditional mast-and-fuselage setup or to build a custom R-Frame configuration with their preferred fuselage length and wing pairing.

The integrated mast-fuselage concept is relatively uncommon in the broader foil market, where most brands use modular bolt-together assemblies. A few other manufacturers have explored similar one-piece or reduced-joint designs, but Delta's R-Frame remains distinctive in how it merges three components into a single molded part while retaining a detachable rear fuselage for versatility.