2026 BlackOps BMX Base
- Category
- BMX/Dirt Jump
- Design
- BMX Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Steel
- Features
- Disc brake
Geometry
Ref | 17" | |
Stack | — | 42mm |
Reach | — | 9.9mm |
Stack to Reach Ratio | — | 4.25:1 |
Seat Tube Length, C-T | — | 17mm |
Top Tube Length, Effective/Horizontal Center | — | 24.4mm |
Top Tube Length, Actual C-C | 4mm | 23.1mm |
Top Tube Slope | — | 16.1deg |
Head Tube Angle | — | 71deg |
Seat Tube Angle | — | 71deg |
Head Tube Length | — | 4.9mm |
Bottom Bracket Drop | 373.5mm | 2.5mm |
Bottom Bracket Height | 1mm | 372mm |
Chainstay Length | — | 18.3mm |
Chainstay Length Horizontal | — | 18.1mm |
Front-Center | — | 25.3mm |
Front-Center Horizontal | — | 25.2mm |
Wheelbase | — | 43.3mm |
Fork Offset/Rake | — | 1.6mm |
Fork Length (Axle-To-Crown) | — | 17.5mm |
Trail | — — | 127.3mm very high |
Mechanical Trail | — | 120.3mm |
Wheel Flop | — | 39.2mm |
Standover Height | — | 29.5mm |
Tire to Pedal Spindle | — 170 mm cranks | -524.2mm 175 mm cranks |
Pedal Spindle to Ground Clearance | -169mm 170 mm cranks | 197mm 175 mm cranks |
Base Build
Ref | 17" | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.5in | 2.5in |
Tire Outer Diameter | 749mm | 749mm |
Bike Length with Tires | — | 792.3mm |
Crank Length | — | 175mm |
Handlebar Width | — | 306mm |
Stem Length | — | 50mm |
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
BMX/Dirt JumpSource:https://blackops.bike/products/specop-29-disc-21882