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Description
best gravel bike frameset Altera G21 DB Gravel Bike Frameset Prism BlueSpecifications of Altera G21 UCI Approved Yes Parts Included G21 Frame, Fork, Handlebar, Seatpost Lead Time 45days Frame Size 45cm,49cm, 52cm, 54cm, 56cm, 58cm, 60cm Material High Modulus Toray 800 Carbon Fiber Color Prism Blue BB BB T 47 inboard bearing GRX crank: T47 BB inboard bearing for Shimano 24mm spindle size SRAM DUB DUB wide crank: T47 BB inboard bearing for SRAM DUB SRAM GXP: T47 BB inboard bearing for SRAM GXP BB Width 85. 5mm Headtube
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Specifications of Altera G21
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UCI Approved
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Yes
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Parts Included
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G21 Frame, Fork, Handlebar, Seatpost
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Lead Time
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45days
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Frame
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Size
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45cm,49cm, 52cm, 54cm, 56cm, 58cm, 60cm
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Material
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High Modulus Toray 800 Carbon Fiber
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Color
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Prism Blue
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BB
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BB T-47 inboard bearing
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- GRX crank: T47 BB inboard bearing for Shimano 24mm spindle size
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- SRAM DUB / DUB wide crank: T47 BB inboard bearing for SRAM DUB
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- SRAM GXP: T47 BB inboard bearing for SRAM GXP
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BB Width
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85.5mm
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Headtube
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Straight 1-1/2”
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Rear Dropout
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12*142 Thru Axle
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Rear Derailleur Hanger
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Universal Derailleur Hanger (UDH) - Replaceable
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Frame Weight
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Champagne 1170g (56cm)
Raw 1150g (56cm)
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Handlebar
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H21 carbon integrated handlebar
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Handlebar Size
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400mm, 420mm, 440mm
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Stem Size
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80mm, 90mm, 100mm, 110mm
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Handlebar Weight
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360+/-15g (420x90)
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Fork & Seatpost
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Fork
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1 1/8" - 1 1/2", 12*100 Thru Axle
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Fork Weight (Painted, 56cm frame)
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480g
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Seatpost Weight
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95.2g (without clamp)
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Seatpost Shape
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Round (27.2mm)
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Compatibility
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Chainring
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- Single: Max of 42t for normal crank spindle and 44t for wide crank spindle
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Brake Fitment
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Flat Mount Disc
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Cable Routing
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Internal
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Bottle Mounts
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4
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Mudguard Compatible
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Yes
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Cargo Rack Compatible
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Yes
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Max Tire Width
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700x53mm, 650Bx2.1” (single chainring setup)
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Accessories
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Handlebar Spacers
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- 3mm: 1PC
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- 5mm: 1PC
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- 10mm: 2PCS
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Headset Bearing Cap
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10mm: 1PC
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Front Axle
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1pc
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Rear Axle
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1pc
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Limited Rider Weight
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125KG
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Warranty
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6 Years
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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
4.9 ★★★★★
Based on 26 reviews
Sort
Product Reviews
★★★★★ 5
Comfy
The most comfortable Sandals I own!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
More comfortable than flats!
Size: 8.5, Color: Bay Fog
I love these sandals! They run true to size, and they’re sooo comfortable. I was worried about getting fakes, but these were the real deal. The color is lovely (light purple). The foot bed can get dirty, but I find them to wash up nicely (by hand, not machine). I have purchased two more colors since! So much better than flats!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
★★★★★ 5
Comfy dual-mode sandals
Cute, quite comfy to walk in and love the support of the heel strap! It is not as comfy if using in slipper mode because the straps don’t keep your foot tight enough. I am usually a 8.5 but it runs slightly small so I switched up to a 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2025
★★★★★ 5
Love them
Size: 5.5, Color: Red Pepper
I have gotten so many compliments on these shoes! They’re true to size and comfortable. Because of the material feet might sweat easier if hot but they dry quick. Quality is great and the color looks good, it’s more of a orange/red color. I got a 5.5 size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Stylist and comfortable!!!
Size: 6, Color: Red Pepper
So comfortable and well made. I’m going to get these in multiple colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
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