MK booms use the highest quality materials and production methods for the best strength to weight ratio.
MK carbon booms use pre-preg layup which is widely recognised as the best technology for carbon booms.
Both carbon and alloy booms are monocoque construction so there are no joints at the boom clamp area - improving stiffness and service life.
The aluminium alloy used in the Solus is aircraft grade 7075 alloy to ensure maximum stiffness and resistance to corrosion.

XT HD RDM
Overview
NEW PHOTOS SOON! MK Carbon extensions are drop dead gorgeous whereby you can see the carbon layer in a matt finish. Carbon extensions really are worth it because it saves a lot of weight especially in the longer extensions and also it bends a little which gives the sail a better profile just like a mast.
Features
- High strength pre-preg carbon tube now with heavy duty constructions
- 25% lighter than equivalent alu. extensions
- 25mm adjustment intervals
- Marine grade stainless steel throughout
- Large pulley wheel ‘Euro-Pin’ base
- Metal cleats
Specifications
Model | XT HD RDM | XT HD SDM |
Extension | 30cm | 45cm |
Overall Length | 45cm | 60cm |
Tubing | Carbon | Carbon |
Adjustment | Pin / Collar | Pin / Collar |
Weight | 650g | 680g |
Price £ 69.00 / 79.00





XT SDM
Overview
MK Carbon extensions are drop dead gorgeous whereby you can see the carbon layer in a high gloss finish. Carbon extensions really are worth it because it saves a lot of weight especially in the longer extensions and also it bends a little which gives the sail a better profile just like a mast.
Features
- High strength pre-preg carbon tube
- 25% lighter than equivalent alu. extensions
- 25mm adjustment intervals
- Marine grade stainless steel throughout
- Large pulley wheel ‘Euro-Pin’ base
- Metals cleat
Specifications
Model | XT SDM | XT SDM |
Extension | 30cm | 45cm |
Overall Length | 45cm | 60cm |
Tubing | Carbon | Carbon |
Adjustment | Snap-lock | Snap-lock |
Weight (Kg) | 427g | 473g |
Price £ 59.00 / 70.00





MB07N
Overview
A high quality one piece forged stainless steel U-Pin mast base where the U-pin will never unscrew from the base or worse, break from corrosion in the bolt within. U-Pin is pretty much the standard for extensions these days. It has the benefit of allowing the sail to swivel independently from the base.
Features
Specifications
Model | MB07N |
System | Euro Pin |
Joint type | Tendon |
Weight (Kg) | 275g |