2025 Giant XTC Advanced SL 29 vs 2027 Specialized Epic Hardtail Comp SRAM 70, RockShox REBA
The M is the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA size closest to your M Giant XTC Advanced SL 29. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA
Compared with the Giant XTC Advanced SL 29 in M, the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA in M places the top of the head tube 4 mm higher and 5 mm further back, relative to the bottom bracket. Its wheelbase is 11 mm longer, which can contribute to stability at speed.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- +11 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Giant XTC Advanced SL 29, MSpecialized Epic Hardtail Comp SRAM 70, RockShox REBA, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Giant XTC Advanced SL 29 M | Specialized Epic Hardtail Comp SRAM 70, RockShox REBA M | Difference |
|---|---|---|---|
| Reach | 435 | 430mm | −5 mm |
| Stack | 604 | 608mm | +4 mm |
| Head tube angle | 69.5° | 68.5° | −1.0° |
| Seat tube angle | 73.5° | 74° | +0.5° |
| Chainstay length | 425 | 430mm | +5 mm |
| Wheelbase | 1106 | 1117mm | +11 mm |
| BB drop | 58 | 63mm | +5 mm |
| Standover | 764 | 792mm | +28 mm |
| Seat tube length | 431 | 430mm | −1 mm |
| Head tube length | 95 | 95mm | ±0 mm |
| Effective top tube | not listed | 604mm | |
| BB height | not listed | 309mm | |
| Fork length | not listed | 506mm |
Differences are the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA minus the Giant XTC Advanced SL 29. Full charts: 2025 Giant XTC Advanced SL 29, 2027 Specialized Epic Hardtail Comp SRAM 70, RockShox REBA.
Where each sits in its class
Giant XTC Advanced SL 29Specialized Epic Hardtail Comp SRAM 70, RockShox REBA
Each bike is ranked against the other XC bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Giant XTC Advanced SL 29Advanced SL 29 | Specialized Epic Hardtail Comp SRAM 70, RockShox REBAHardtail Comp - SRAM Eagle 70, RockShox REBA |
|---|---|---|
| Frame | Giant Advanced SL-Grade | not listed |
| Fork | not listed | RockShox Reba |
| Derailleur | not listed | SRAM Eagle 70 Transmission |
| Chain | not listed | SRAM Transmission |
| Bottom bracket | not listed | SRAM DUB |
| Tire | not listed | Specialized Fast Trak, Specialized Air Trak |
| Brake | not listed | SRAM DB4 |
| Handlebar | not listed | Specialized Mini Rise |
| Saddle | not listed | Specialized Power Comp |
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