2026 SPCYCLE G028 Base
- Category
- Progressive Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category |
Geometry
S | S | M | M | L | L | XL | XL | |
Stack | 555mm | 555mm | 574mm | 574mm | 595mm | 595mm | 614mm | 614mm |
Reach | 385mm | 385mm | 393mm | 393mm | 405.5mm | 405.5mm | 416mm | 416mm |
Stack to Reach Ratio | 1.44:1 | 1.44:1 | 1.46:1 | 1.46:1 | 1.47:1 | 1.47:1 | 1.48:1 | 1.48:1 |
Seat Tube Length, C-TTT | 445mm | 445mm | 480mm | 480mm | 520mm | 520mm | 550mm | 550mm |
Top Tube Length, Effective/Horizontal Unknown | 533.6mm | 533.6mm | 558mm | 558mm | 576mm | 576mm | 592mm | 592mm |
Top Tube Slope | 11.9deg | 11.9deg | 10deg | 10deg | 7.8deg | 7.8deg | 6.6deg | 6.6deg |
Head Tube Angle | 71deg | 71deg | 71.2deg | 71.2deg | 71.2deg | 71.2deg | 71.2deg | 71.2deg |
Seat Tube Angle | 74deg | 74deg | 74deg | 74deg | 74deg | 74deg | 74deg | 74deg |
Head Tube Length | 115mm | 115mm | 135mm | 135mm | 157mm | 157mm | 177mm | 177mm |
Bottom Bracket Drop | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm |
Bottom Bracket Height | 286mm | 281mm | 286mm | 281mm | 286mm | 281mm | 286mm | 281mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 427.6mm | 427.6mm | 427.6mm | 427.6mm | 427.6mm | 427.6mm | 427.6mm | 427.6mm |
Front-Center | 612mm | 612mm | 625mm | 625mm | 644mm | 644mm | 661mm | 661mm |
Front-Center Horizontal | 606.4mm | 606.4mm | 619.4mm | 619.4mm | 638.4mm | 638.4mm | 655.9mm | 655.9mm |
Wheelbase | 1034mm | 1034mm | 1047mm | 1047mm | 1066mm | 1066mm | 1083.5mm | 1083.5mm |
Fork Offset/Rake | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm |
Fork Length, Unknown | 405mm | 405mm | 405mm | 405mm | 405mm | 405mm | 405mm | 405mm |
Trail | 67.9mm high | 66.1mm high | 66.5mm high | 64.8mm mid/​neutral | 66.5mm high | 64.8mm mid/​neutral | 66.5mm high | 64.8mm mid/​neutral |
Mechanical Trail | 64.2mm | 62.5mm | 63mm | 61.3mm | 63mm | 61.3mm | 63mm | 61.3mm |
Wheel Flop | 20.9mm | 20.4mm | 20.3mm | 19.8mm | 20.3mm | 19.8mm | 20.3mm | 19.8mm |
Tire to Pedal Spindle | 76mm 170 mm cranks | 81mm 170 mm cranks | 89mm 170 mm cranks | 94mm 170 mm cranks | 108mm 170 mm cranks | 113mm 170 mm cranks | 125mm 170 mm cranks | 130mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 116mm 170 mm cranks | 111mm 170 mm cranks | 116mm 170 mm cranks | 111mm 170 mm cranks | 116mm 170 mm cranks | 111mm 170 mm cranks | 116mm 170 mm cranks | 111mm 170 mm cranks |
Base Build
S | S | M | M | L | L | XL | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 55mm | 50mm | 55mm | 50mm | 55mm | 50mm | 55mm | 50mm |
Tire Width Max | — | 57mm | — | 57mm | — | 57mm | — | 57mm |
Tire Outer Diameter | 732mm | 722mm | 732mm | 722mm | 732mm | 722mm | 732mm | 722mm |
Bike Length with Tires | 1766mm | 1756mm | 1779mm | 1769mm | 1798mm | 1788mm | 1815.5mm | 1805.5mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Progressive GravelSource:https://velo.gravelo.ru/2026/04/22/spcycle-g028/, https://www.sp-cycle.com/Spcycle-G028-Carbon-Gravel-Bike-Frame-700x57C-UDH-Hanger-Full-Internal-Cable-Gravel-Bicycle-Carbon-Frameset-p6993835.html