Midsole & Outsole
Glass Fiber Plate & Stealth Marathon
The full-length plate reinforced with glass fiber delivers exceptional power transfer and pedal stability for XC-style efficiency. The large cleat channel ensures easy entry even in muddy conditions. Combined with Stealth Marathon rubber outsole featuring aggressive "Pillar" tread — knobby raised toe and heel lugs provide hike-a-bike traction when you need to dismount, while a textured instep patch offers grip if you come unclipped mid-ride.
Plate MaterialGlass Fiber Reinforced
Cleat CompatibilitySPD (2-Bolt)
Outsole RubberStealth Marathon
Tread PatternPillar (Hike-A-Bike)
Fit System
BOA® + Dual Velcro
The BOA® Fit System dial provides micro-adjustable precision for the upper foot, while two independent Velcro straps secure the toe box. This dual-system allows independent adjustment — loosen the toe straps for long climbs or foot swelling while keeping the upper locked down for technical descents. A significant improvement over the previous single-BOA design, offering customizable comfort for all-day rides.
Upper ClosureBOA® Dial
Toe ClosureDual Velcro Straps
AdjustmentIndependent Zones
BenefitCustomizable Fit
Upper Construction
Synthetic Upper
Durable synthetic upper with seamless overlays provides structure and protection without pressure points. Ventilated mesh panels enhance breathability during intense efforts, while armored protection in the toe box, heel, and lateral areas shields against rock strikes and trail debris. The non-slip heel cup reduces lift when walking, and the overall construction balances durability with weight for all-mountain performance.
Upper MaterialSynthetic with Mesh
ProtectionArmored Toe/Heel/Lateral
Heel SecurityNon-Slip Heel Cup
ConstructionSeamless Overlays
Product Specs
Five Ten Kestrel BOA
The down-country clipless shoe that bridges XC efficiency and all-mountain durability. Featuring a glass fiber plate for max power transfer, BOA® + Velcro fit system, and Stealth Marathon rubber with hike-a-bike tread, the Kestrel BOA excels on big backcountry days where you need both pedaling performance and walking capability. Stiff, protective, and highly adjustable — built for riders who demand versatility.
Weight~14-16 oz / 400-450g (per shoe)
Price$230
Best ForDown-Country & All-Mountain
CategoryClipless MTB Shoe
Prepared with intention.
Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.
Passion drives us
At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.
