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Hammer up climbs, accelerate on smooth singletrack, carry your speed as the trail dips and dives. This lightweight aluminum 29er combines efficiency and balanced control, just the right combination for XC performance.

Key Performance Factors

Lightweight acceleration

The lightest aluminum hardtail mountain bike frameset Giant has ever produced helps XC riders and racers climb and accelerate with speed.

Unyielding efficiency

With a best-in-class stiffness-to-weight-ratio, the all-new XtC SLR 29 sets the new standard for alloy-XC efficiency.

29er confidence and control

Larger 29-inch diameter wheels roll over rough terrain with balance and stability, giving you momentum on technical climbs and confidence on fast singletrack descents. Can fit up to a 2.4-inch rear tire.

Highlights

With its lightweight ALUXX SLR frameset and 29er-specific geometry, the XtC SLR 29 delivers fast, confident performance on XC trails and racetracks. Engineered to ride with a 100mm suspension fork, this smooth-riding hardtail accelerates with efficiency and makes quick work of the climbs. Here are the technologies that make this the lightest aluminum hardtail in our lineup.

2021 XtC SLR 29 with interactive tooltips

Techs & Features

ALUXX SLR Aluminum Technology

This superlight Pro level aluminum material is made predominantly from 6011 alloy and delivers the highest strength-to-weight ratio of any Giant aluminum frameset. State-of-the-art microscopic grain manipulation and advanced butting allows for 20 percent thinner and lighter tube shapes than ALUXX SL framesets.

MegaDrive

A massive rectangular downtube and oversized toptube work in unison to provide superior front end lateral and torsional steering precision. The precisely engineered, rectangular shaped downtube yields unprecedented steering and pedaling stiffness.

OverDrive

Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4” lower and 1 1/8” upper for road, 1 1/2” lower and 1 1/8” upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.

PowerCore

A massively oversized bottom-bracket/chainstay area features a fully integrated, 86-millimeter wide bottom-bracket design (92-millimeter wide for off-road bikes). Asymmetric chainstays provide additional stiffness on the driveside and stability on the non-driveside.

Tubeless System

Fewer flat tires. Greater traction. Less rolling resistance and a smoother, faster ride. Giant’s Tubeless System makes it easier than ever to experience all these benefits.

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