2026 Giant XTC SLR 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 S Giant XTC SLR 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 SLR 29 in S, the Specialized Epic Hardtail Comp SRAM 70, RockShox REBA in M places the top of the head tube at about the same height and 9 mm further forward, relative to the bottom bracket.
- Frame stack
- +1 mm
- About the same height
- Frame reach
- +9 mm
- Longer frame reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −10 mm
- Shorter: livelier
The two frames
Giant XTC SLR 29, SSpecialized Epic Hardtail Comp SRAM 70, RockShox REBA, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Giant XTC SLR 29 S | Specialized Epic Hardtail Comp SRAM 70, RockShox REBA M | Difference |
|---|---|---|---|
| Reach | 421 | 430mm | +9 mm |
| Stack | 607 | 608mm | +1 mm |
| Head tube angle | 69.5 | 68.5° | −1.0° |
| Seat tube angle | 74.0 | 74° | ±0.0° |
| Chainstay length | 440 | 430mm | −10 mm |
| Wheelbase | 1117 | 1117mm | ±0 mm |
| BB drop | 58 | 63mm | +5 mm |
| Standover | 727 | 792mm | +65 mm |
| Seat tube length | 380 | 430mm | +50 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 SLR 29. Full charts: 2026 Giant XTC SLR 29, 2027 Specialized Epic Hardtail Comp SRAM 70, RockShox REBA.
Where each sits in its class
Giant XTC SLR 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 SLR 29SLR 29 1 | Specialized Epic Hardtail Comp SRAM 70, RockShox REBAHardtail Comp - SRAM Eagle 70, RockShox REBA |
|---|---|---|
| Frame | Giant XTC | not listed |
| Fork | Giant Crest | RockShox Reba |
| Shifter | Shimano SLX M7100 | not listed |
| Derailleur | Shimano SLX M7100 | SRAM Eagle 70 Transmission |
| Cassette | Shimano SLX | not listed |
| Chain | KMC X-12 | SRAM Transmission |
| Crankset | Shimano SLX | not listed |
| Wheelset | Giant XCT | not listed |
| Tire | Maxxis Recon Race | Specialized Fast Trak, Specialized Air Trak |
| Brake | Shimano MT500 | SRAM DB4 |
| Rotor | Shimano SM-RT10 | not listed |
| Handlebar | Giant Connect XC | Specialized Mini Rise |
| Stem | Giant Contact | not listed |
| Grips | Giant Sole-O | not listed |
| Dropper post | Giant Contact Switch Core | not listed |
| Saddle | Giant ErgoContact Trail | Specialized Power Comp |
| Bottom bracket | not listed | SRAM DUB |
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