Giant XCR 1 27.5 Boost are a super lightweight carbon XC wheelsystem featuring the very latest wheel technologies for a superior ride. Experience precise handling, pinpoint control and rapid acceleration. Boost technology (a wider hub standard) means a stronger spoke bracing angle delivering riders a range of benefits including enhanced stiffness for precise handling. Bikes designed to accomodate Boost wheels have wider and stiffer suspension suspension pivots, shorter chainstays and improved frame clearance. Full carbon construction coupled with Dynamic Balanced Lacing (Giant's wheel technology that means wheels are tensioned to reach balanced tension under acceleration and braking forces) deliver enhance braking performance, stiffness for precise handling and efficient pedalling power transfer plus low weight for snappy acceleration. Wider 21mm inner rims allow you to run wider tyres and XCR 1's are tubeless compatible so you can gain all the benefits of running tubeless tyres with lower pressures for improved traction, reduced rolling resistance and reduced risk of flats.
SUPERIOR EFFICIENCY — market-leading transmission stiffness, best-in-class weight and optimized aerodynamics.
PINPOINT CONTROL — market-leading lateral stiffness and superior braking performance in all conditions.
ENGINEERED DURABILITY — handcrafted with proprietary materials, resins and processes.
Ultra-light full composite 27.5” rims
Tubeless compatible using supplied rim strips and valves
21mm inner rim width for better tire performance
Sapim Laser/ Sapim Race spokes; 28 front/rear
Dynamic Balance Lacing for enhanced drive efficiency and braking control
Compatible with SRAM XX1 drivetrain using optional XD driver bodies
1565g per pair
Rider Weight Limit: 300lbs / 136kg
Behind the performance of Giant off-road WheelSystems are a number of innovative technologies that, together, deliver superior efficiency, pinpoint control and engineered durability. Here’s a look at the technologies you’ll find in new high-performance off-road WheelSystems such as the TRX 0.
More leverage on the “pulling” spokes and less on the “pushing” spokes creates slightly different spoke tension levels when the wheel is static. As pedaling force is applied, the tension balances, improving stiffness and efficiency.
OPTIMIZED ANCHOR POINT
Hub flanges are engineered and placed for optimal spoke bracing angles. This helps boost lateral wheel stiffness.
PRECISION HUB INTERNALS
Proprietary shell and precision-engineered hub internals offer dependable performance in demanding off-road conditions. All hub parts are readily available and serviceable by your local retailer.
Tubeless Compatible rims allow for lower air pressure so the tire can conform better to the trail. This improves traction, lowers rolling resistance and reduces the risk of pinch flats.
Giant rims are produced in-house using our industry-leading manufacturing expertise with carbon and high-strength alloys. This allows us to achieve better strength, stiffness and durability at lower overall weights.
BOOST AXLE SPACING
Wider hub diameters (110mm front and 148mm rear) produce stiffer hubs and improved overall trail handling with the latest Boost compatible framesets. Wider spacing also improves the chainline for optimal drivetrain performance.
Wider 33mm rims offer improved traction and control by optimizing tire profile and performance for off-road terrain.
Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.