Gravel bikes are truly versatile bikes that can glide efficiently on the pavement and conquer the dirt trails when there's no more pavement. These bikes are perfect for those who love exploring. The Bianchi Impulso Allroad GRX400 Bike is engineered for multi-surface speed-seekers and adrenaline racers. It has an aluminum frame and full carbon fork that uses 12mm thru-axles on the front and rear. The frame features internal cable routing, flat mount disc brake mounts, a press-fit bottom bracket, and is compatible with up to 700x40mm tires. The frame is also compatible with mudguards and a rear carrier.
The GRX400 version of the Bianchi Impulso Allroad comes with a Shimano GRX400 2x10-speed drivetrain. With a 46/30T chainring combo up front and an 11-34T cassette on the rear, you'll have no issues climbing hills and riding longer distances on mixed terrain. Shimano BR-RX400 hydraulic disc brakes provide highly reliable stopping power so you can descend under control. Velomann GD24 wheels are paired with Kenda Alluvium tires that perform well on the pavement and hardpack dirt. With the right tires, you can ditch the tubes and turn the tires tubeless for a smoother ride, better traction, and fewer flats.
| Frame | Impulso Allroad Aluminum |
|---|---|
| Fork | Full Carbon 1-1/8", Flat Mount, 12x100mm |
| Headset | FSA No.8B/ZS4D 1-1/8" |
| Shifters | Shimano GRX 400, 2x10-Speed |
| Front Derailleur | Shimano GRX400 |
| Rear Derailleur | Shimano GRX400 |
| Crankset | Shimano FC-RX600, 46/30T |
| Bottom Bracket | Shimano SM-BB71-41B |
| Chain | Shimano CN-HG54 Super Narrow HG, 10-Speed |
| Cassette | Shimano 11-34T |
| Brakes | Shimano BR-RX400 Hydraulic Disc, Shimano RT64 160mm Rotors |
| Wheelset | Velomann GD24 Disc, 700c, 24mm, 32H, Tubeless, Formula 12x142/100mm Thru-Axles |
| Tires | Kenda Alluvium 700x40, 60TPI |
| Handlebar | Velomann RA68A Aluminum 6061, 70mm Reach, 16° Flare |
| Stem | Velomann ST182A Alloy 6061, 7° Rise |
| Grips/Bar Tape | - |
| Seatpost | Velomann SP02.1 AL6061, 15mm Offset, 31.6mm |
| Seatclamp | Bolt-Type |
| Saddle | Velomann 2302HRN, Steel Rail, 280x145mm |
| Intended Use | Allroad, Gravel, Road, Commuter, Light-Duty Touring |
Note: Components are subject to change without notice.
| Size | 470 | 500 | 530 | 550 | 570 | 590 | 610 | 630 |
|---|---|---|---|---|---|---|---|---|
| A: Seat Tube Length | 450 | 470 | 500 | 520 | 540 | 570 | 580 | 610 |
| B: Effective Top Tube | 515 | 525 | 535 | 550 | 560 | 575 | 585 | 595 |
| C: Stack | 538 | 546 | 553 | 567 | 578 | 597 | 610 | 632 |
| D: Reach | 366 | 374 | 377 | 382 | 389 | 392 | 393 | 396 |
| E: BB Height | - | - | - | - | - | - | - | - |
| F: BB Drop | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 |
| G: Head Tube Length | 120 | 125 | 130 | 145 | 155 | 175 | 185 | 210 |
| H: Head Tube Angle | 70 ° | 71 ° | 71.5 ° | 71.5 ° | 72 ° | 72 ° | 72.5 ° | 72.5 ° |
| I: Seat Tube Angle | 74.5 ° | 74.5 ° | 74 ° | 73.5 ° | 73.5 ° | 73 ° | 72.5 ° | 72.5 ° |
| J: Standover Height | - | - | - | - | - | - | - | - |
| K: Chainstay Length | 437 | 437 | 440 | 440 | 440 | 443 | 443 | 443 |
| L: Wheelbase | - | - | - | - | - | - | - | - |
| Crank Arm Length | 170 mm | 170 mm | 170 mm | 172.5 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem Length | 70 mm | 90 mm | 90 mm | 100 mm | 110 mm | 110 mm | 120 mm | 120 mm |
| Handlebar Width | 400 mm | 400 mm | 400 mm | 420 mm | 420 mm | 420 mm | 440 mm | 440 mm |
| Size | 470 | 500 | 530 | 550 | 570 | 590 | 610 | 630 |
|---|---|---|---|---|---|---|---|---|
| A: Seat Tube Length | 17.7 | 18.5 | 19.7 | 20.5 | 21.3 | 22.4 | 22.8 | 24.0 |
| B: Effective Top Tube | 20.3 | 20.7 | 21.1 | 21.7 | 22.0 | 22.6 | 23.0 | 23.4 |
| C: Stack | 21.2 | 21.5 | 21.8 | 22.3 | 22.8 | 23.5 | 24.0 | 24.9 |
| D: Reach | 14.4 | 14.7 | 14.8 | 15.0 | 15.3 | 15.4 | 15.5 | 15.6 |
| E: BB Height | - | - | - | - | - | - | - | - |
| F: BB Drop | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 |
| G: Head Tube Length | 4.7 | 4.9 | 5.1 | 5.7 | 6.1 | 6.9 | 7.3 | 8.3 |
| H: Head Tube Angle | 70.0 ° | 71.0 ° | 71.5 ° | 71.5 ° | 72.0 ° | 72.0 ° | 72.5 ° | 72.5 ° |
| I: Seat Tube Angle | 74.5 ° | 74.5 ° | 74.0 ° | 73.5 ° | 73.5 ° | 73.0 ° | 72.5 ° | 72.5 ° |
| J: Standover Height | - | - | - | - | - | - | - | - |
| K: Chainstay Length | 17.2 | 17.2 | 17.3 | 17.3 | 17.3 | 17.4 | 17.4 | 17.4 |
| L: Wheelbase | - | - | - | - | - | - | - | - |
| Crank Arm Length | 170 mm | 170 mm | 170 mm | 172.5 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Stem Length | 70 mm | 90 mm | 90 mm | 100 mm | 110 mm | 110 mm | 120 mm | 120 mm |
| Handlebar Width | 400 mm | 400 mm | 400 mm | 420 mm | 420 mm | 420 mm | 440 mm | 440 mm |
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Santa Cruz recently released their new Stigmata V4 gravel bike, which is packed with tons of thoughtful, progressive features that ensure that you are getting the most out of your ride so you can "go fast, go light, and go further." The new Stigmata leaves no stone unturned for any rider looking for a high quality, lightweight, state of the art, durable and versatile gravel bicycle!
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to 
