2026 Simpatico Gamma Race Base
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, suspension corrected
- Frame
- Titanium
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
48 | 51 | 54 | 56 | 58 | 61 | |
Stack | 560mm | 565mm | 585mm | 599mm | 619mm | 639mm |
Reach | 370mm | 379mm | 393mm | 407mm | 415mm | 425mm |
Stack to Reach Ratio | 1.51:1 | 1.49:1 | 1.49:1 | 1.47:1 | 1.49:1 | 1.5:1 |
Seat Tube Length, C-T | 446mm | 476mm | 521mm | 546mm | 566mm | 596mm |
Top Tube Length, Effective/Horizontal HT Top | 515mm | 535mm | 555mm | 578mm | 592mm | 608mm |
Head Tube Angle | 70.3deg | 70.9deg | 71.7deg | 71.7deg | 71.6deg | 71.6deg |
Effective Seat Tube Angle, ETT HT Top | 75.5deg | 74.5deg | 74.5deg | 74deg | 74deg | 74deg |
Head Tube Length | 98mm | 101mm | 126mm | 144mm | 169mm | 190mm |
Bottom Bracket Drop | 87mm | 87mm | 87mm | 84mm | 81mm | 81mm |
Bottom Bracket Height | 279mm | 279mm | 279mm | 282mm | 285mm | 285mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 421.1mm | 421.1mm | 421.1mm | 421.7mm | 422.3mm | 422.3mm |
Front-Center | 603mm | 612mm | 615mm | 635mm | 651mm | 667mm |
Front-Center Horizontal | 596.9mm | 598.9mm | 608.9mm | 628.3mm | 645.7mm | 661.7mm |
Wheelbase | 1018mm | 1020mm | 1030mm | 1050mm | 1068mm | 1084mm |
Fork Offset/Rake | 54mm | 54mm | 49mm | 49mm | 49mm | 49mm |
Fork Length (Axle-To-Crown) | 425mm | 425mm | 415mm | 415mm | 415mm | 415mm |
Trail | 73.7mm high | 69.6mm high | 69.4mm high | 69.4mm high | 70.1mm high | 70.1mm high |
Mechanical Trail | 69.4mm | 65.8mm | 65.9mm | 65.9mm | 66.5mm | 66.5mm |
Wheel Flop | 23.4mm | 21.5mm | 20.7mm | 20.7mm | 21mm | 21mm |
Standover Height | 724mm | 741mm | 776mm | 799mm | 819mm | 845mm |
Tire to Pedal Spindle | 67mm 170 mm cranks | 76mm 170 mm cranks | 79mm 170 mm cranks | 97mm 172 mm cranks | 110mm 175 mm cranks | 126mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 109mm 170 mm cranks | 109mm 170 mm cranks | 109mm 170 mm cranks | 110mm 172 mm cranks | 110mm 175 mm cranks | 110mm 175 mm cranks |
Base Build
48 | 51 | 54 | 56 | 58 | 61 | |
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 |
Tire Width | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm |
Tire Width Max | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm |
Tire Outer Diameter | 732mm | 732mm | 732mm | 732mm | 732mm | 732mm |
Bike Length with Tires | 1750mm | 1752mm | 1762mm | 1782mm | 1800mm | 1816mm |
Crank Length | 170mm | 170mm | 170mm | 172mm | 175mm | 175mm |
Handlebar Width | 400mm | 400mm | 420mm | 440mm | 440mm | 460mm |
Stem Length | 70mm | 70mm | 80mm | 90mm | 100mm | 100mm |
Published Sizing Recommendations
Height | 155 cm to 165 cm | 165 cm to 172 cm | 172 cm to 180 cm | 180 cm to 188 cm | 188 cm to 195 cm | 195 cm to 205 cm |
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
All-road/GravelSource:www.simpaticobikes.com