2026 Giant XTC Advanced 29 vs 2027 Specialized Epic Hardtail Comp SRAM 70, RockShox REBA
The XL is the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA size closest to your XL Giant XTC Advanced 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 29 in XL, the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA in XL places the top of the head tube 4 mm higher and 3 mm further forward, relative to the bottom bracket. Its wheelbase is 19 mm longer, which can contribute to stability at speed.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- +3 mm
- Longer frame reach
- Wheelbase
- +19 mm
- Longer: steadier at speed
- Head angle
- −1.5°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Giant XTC Advanced 29, XLSpecialized Epic Hardtail Comp SRAM 70, RockShox REBA, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Giant XTC Advanced 29 XL | Specialized Epic Hardtail Comp SRAM 70, RockShox REBA XL | Difference |
|---|---|---|---|
| Reach | 477 | 480mm | +3 mm |
| Stack | 632 | 636mm | +4 mm |
| Head tube angle | 70.0 | 68.5° | −1.5° |
| Seat tube angle | 73.5 | 74° | +0.5° |
| Effective top tube | 665 | 662mm | −3 mm |
| Chainstay length | 425 | 430mm | +5 mm |
| Wheelbase | 1159 | 1178mm | +19 mm |
| BB drop | 58 | 63mm | +5 mm |
| Standover | 829 | 847mm | +18 mm |
| Seat tube length | 525 | 520mm | −5 mm |
| Head tube length | 115 | 125mm | +10 mm |
| 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 29. Full charts: 2026 Giant XTC Advanced 29, 2027 Specialized Epic Hardtail Comp SRAM 70, RockShox REBA.
Where each sits in its class
Giant XTC Advanced 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 29Advanced 29 1 | Specialized Epic Hardtail Comp SRAM 70, RockShox REBAHardtail Comp - SRAM Eagle 70, RockShox REBA |
|---|---|---|
| Frame | Giant XTC | not listed |
| Fork | Fox 32 Factory | RockShox Reba |
| Shifter | Shimano XT M8100 | not listed |
| Derailleur | Shimano XT M8100 SGS | SRAM Eagle 70 Transmission |
| Cassette | Shimano SLX M7100 | not listed |
| Chain | KMC X-12 | SRAM Transmission |
| Crankset | Shimano XT M8120 | not listed |
| Wheelset | Giant XCR 2 | not listed |
| Tire | Maxxis Rekon Race | Specialized Fast Trak, Specialized Air Trak |
| Brake | Shimano Deore XT | SRAM DB4 |
| Rotor | Giant TR55 | not listed |
| Handlebar | Giant Contact XC 35 | Specialized Mini Rise |
| Stem | Giant Contact SL XC | not listed |
| Grips | Giant XC Pro | not listed |
| Dropper post | Giant Contact Switch Core | not listed |
| Saddle | Giant Grit SL | Specialized Power Comp |
| Bottom bracket | not listed | SRAM DUB |
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