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Description
mountainbike xl Giant Reign SX 29Pick your line and let it rip. From chunky alpine terrain to warp speed park runs, this hard charging 29er feasts on rugged terrain, giving you the confidence to charge harder. Race bred suspension Maestro rear suspension and a 170mm fork developed and tested in Enduro World Series races. The trunnion mount rear shock has a longer stroke and smoother feel, and an Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame
Pick your line and let it rip. From chunky alpine terrain to warp-speed park runs, this hard-charging 29er feasts on rugged terrain, giving you the confidence to charge harder.
Race-bred suspension
Maestro rear suspension and a 170mm fork developed and tested in Enduro World Series races. The trunnion mount rear shock has a longer stroke and smoother feel, and an Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame weight.
Progressive enduro geometry
A strong and durable ALUUX SL aluminum frameset helps you ride aggressive descents and rail corners with confidence. Enduro-optimized head and seattube angles, plus a 170mm fork with 44mm offset, produce confident front-end handling.
29er confidence and control
Larger 29-inch diameter wheels roll over rugged enduro terrain with improved balance and stability, giving you the momentum to crank up tough climbs and the confidence to fly on fast, technical descents.
Specifications
| Sizes S, M, L, XL | Rear Derailleur SRAM NX Eagle |
| Colors Starry Night / Jade Teal | Brakes Shimano SLX BR-M7120, hydraulic, Shimano RT-66 rotors [F]203mm, [R]203mm |
| Frame ALUXX SL-Grade Aluminum front and rear triangles, 146mm Maestro suspension, 12x148mm thru-axle | Brake Levers Shimano SLX BL-M7100 |
| Fork Fox 38 Performance Elite, GRIP 2 damper, 44mm offset, 170mm, 15x110 Kabolt X, custom tuned for Giant | Cassette SRAM NX Eagle, 11x50 |
| Shock Fox DHX2 Performance Elite, lockout, 205/60, custom tuned for Giant S:400#, M:400#, L:450#, XL:500# | Chain SRAM NX Eagle |
| Handlebar Giant Contact SL TR35, 800x35mm, 20mm rise | Crankset TruVativ Descendent 6k, DUB, 32t S:165mm, M:170mm, L:170mm, XL:170mm |
| Grips Giant Tactal Pro Single S:120mm, M:120mm, L:130mm, XL:130mm | Bottom Bracket SRAM DUB, press fit |
| Stem Giant Contact SL 35 S:40mm, M:40mm, L:40mm, XL:40mm | Rims Giant AM 29, alloy |
| Seatpost Giant Contact Switch dropper, remote S: 125mm travel / 30.9 x 395mm M: 150mm travel / 30.9 x 440mm L: 170mm travel / 30.9 x 450mm XL: 170mm travel / 30.9 x 450mm | Hubs Giant Boost, sealed |
| Saddle Giant Romero | Spokes Sapim |
| Pedals sold separately | Tires [F] Maxxis Assegai 29x2.5 WT, 3C MaxxTerra, EXO+, TR [R] Maxxis Minion DHR II 29x2.4 WT, 3C MaxxTerra , EXO+, TR tubeless |
| Shifters SRAM NX Eagle, 1x12 | Extras tubeless prepared, 2.5" max tire size, 36t max chainring size, MRP SXg chain guide |
| Front Derailleur N/A | Weight The most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality. |
Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| SEAT TUBE LENGTH (inch) | 17 | 17 | 18.3 | 19.5 |
| SEAT TUBE ANGLE | 76.4° | 76.4° | 76.4° | 76.4° |
| TOP TUBE LENGTH (inch) | 22.6 | 23.7 | 25.2 | 26.2 |
| HEAD TUBE LENGTH (inch) | 3.9 | 3.9 | 4.3 | 4.7 |
| HEAD TUBE ANGLE | 64.6° | 64.6° | 64.6° | 64.6° |
| FORK RAKE (inch) | 1.7 | 1.7 | 1.7 | 1.7 |
| TRAIL (inch) | 5.2 | 5.2 | 5.2 | 5.2 |
| WHEELBASE (inch) | 46.9 | 48 | 49.7 | 50.7 |
| CHAIN STAY LENGTH (inch) | 17.3 | 17.3 | 17.3 | 17.3 |
| BOTTOM BRACKET DROP (inch) | 1.1 | 1.1 | 1.1 | 1.1 |
| STACK (inch) | 24.5 | 24.5 | 24.8 | 25.2 |
| REACH (inch) | 16.7 | 17.8 | 19.2 | 20.1 |
| STAND OVER HEIGHT (inch) | 29.8 | 29.9 | 30.7 | 31.7 |
| HANDLEBAR WIDTH (inch) | 31.5 | 31.5 | 31.5 | 31.5 |
| STEM LENGTH (inch) | 1.6 | 1.6 | 1.6 | 1.6 |
| CRANK LENGTH (inch) | 6.5 | 6.7 | 6.7 | 6.7 |
| WHEEL SIZE |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1278 reviews
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Product Reviews
★★★★★ 5
Very nice pillowcases
Color: Haze Blue, Size: 2 Pack Standard（20"X 26"）
Very pretty pillowcases. I washed them in cold water and dried them on low before using. They came out a little wrinkly but smoothed out on the pillow. The fabric is shiny and rich looking. It's not hot yet, here in Texas, but I am anticipating the coolness of these pillowcases to feel very nice. I appreciate the envelope closure. It gives it a finished look. There was no odd odor. They feel good like they'll last for a long time. I am a satisfied customer.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Body pillow covers
Color: White, Size: Body（20"X 54"）
I ordered the body pillow covers. They fit my pillow perfectly and the fabric is smooth and silky, but I did not find them cooling.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Cooling King-Size Pillows (used on a Queen pillows to tuck the extra in)
Color: Navy Blue, Size: 2 Pack King（20"X 36"）, Color: Navy Blue, Size: 2 Pack King（20"X 36"）
🛏️ Product Review: Cooling King-Size Pillows (used on a Queen bed)
⭐ The Good
• These are king-size pillows, which I actually love on a queen bed because I can tuck the ends into the fabric.
• The fabric feels slick and cool, but you don’t slip off of it.
• They feel cold to the touch right out of the package (which is wild).
• I sleep extremely hot and even run fevers at night due to a medical condition (literally 101–102° sometimes), and these pillows still stay cool where I lay my head.
• I’ve honestly never slept this well in my life.
• For the price, you cannot beat them, and they go on sale often.
• These beat any high-end version I’ve tried.
• If you sleep normal-temp and not lava-hot like me, you’re going to be VERY comfortable with these.
⚠️ The Bad
• The fabric does show crease lines.
• If wrinkles bother you, this might annoy you (doesn’t bother me personally).
🔧 What I’d Change / Tips for Care
• Don’t use fabric softener — it clogs the cooling fabric and ruins how it works.
• Wash with unscented detergent + a little vinegar.
• Dry on low heat only (do NOT dry on high if you want the fabric to keep working long-term).
✅ Final Thoughts
I will literally never not own these again.
If you sleep hot, night-sweat, or just want a pillow that actually stays cool — these are it.
10/10 recommend.
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Reviewed in the United States on February 17, 2026
★★★★★ 3
Love it but it stains
Color: Haze Blue, Size: 2 Pack Standard（20"X 26"）
I love these but had to knock some stars down for a single reason. They are soft, the material is somehow both substantial and airy at the same time, and a smooth, silky (not satin), cozy texture. The color was exactly as pictured. The envelope style works great to keep my pillows covered. The fabric lays perfectly. I love sleeping on this pillow case.
Took two stars off because every single atom of oil on my face stained it immediately and won't come out in the wash. Its not subtle. You can see anywhere my face has been, forever. I don't have some incredibly oily face or hair, I've never had this happen to another pillow case in my life.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Good buy
Color: Navy Blue, Size: Body（20"X 54"）
Nice and soft , well packaged and looks good. Kinda pillowcase you find in a luxury hotel
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Reviewed in the United States on May 1, 2026