2021 Bulls Grinder Trail Grinder 61 cm
Build
650B/27.5 in × 47 mm
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Bulls Grinder
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 660mm |
| Reach | 402mm |
| Stack to Reach Ratio | 1.64:1 |
| Seat Tube Length, C-T | 610mm |
| Top Tube Length, Effective/Horizontal Center | 610mm |
| Top Tube Slope | 7.6deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 72.5deg |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 433.6mm |
| Front-Center | 660.7mm |
| Front-Center Horizontal | 656.4mm |
| Wheelbase | 1090mm |
| Fork Offset/Rake | 50.1mm |
| Trail | 63.7mm mid/neutral |
| Mechanical Trail | 60.3mm |
| Wheel Flop | 19.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 151.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 94mm |
Trail Grinder Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1768mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.bulls.de/de-de/produkt/bulls-trail-grinder-diamant?FARB=FARB_GL5TZHRM&RHOE=RHOE_55