2021 Niner Bikes RLT 9 Steel 4-Star Shimano GRX 800 2X
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Steel
- Fork
- Carbon/Composite
- Features
- Disc brake, Single-speed capable
Geometry
47cm | 50cm | 53cm | 56cm | 59cm | 62cm | |
Stack | 543mm | 558mm | 579mm | 597mm | 615mm | 636mm |
Reach | 365mm | 367mm | 375mm | 384mm | 398mm | 406mm |
Stack to Reach Ratio | 1.49:1 | 1.52:1 | 1.54:1 | 1.55:1 | 1.55:1 | 1.57:1 |
Seat Tube Length, Unknown | 470mm | 500mm | 530mm | 560mm | 590mm | 620mm |
Top Tube Length, Effective/Horizontal Unknown | 510mm | 525mm | 545mm | 565mm | 585mm | 605mm |
Top Tube Slope | 10.4deg | 8.7deg | 7.7deg | 6.4deg | 5.1deg | 4.3deg |
Head Tube Angle | 70deg | 70.5deg | 71deg | 71.5deg | 72deg | 72.5deg |
Seat Tube Angle | 74.5deg | 74deg | 73.5deg | 73deg | 73deg | 72.5deg |
Head Tube Length | 110mm | 125mm | 145mm | 165mm | 185mm | 205mm |
Bottom Bracket Drop | 75mm | 75mm | 75mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 281mm | 281mm | 281mm | 286mm | 286mm | 286mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 428.5mm | 428.5mm | 428.5mm | 429.3mm | 429.3mm | 429.3mm |
Front-Center | 583mm | 589mm | 600mm | 611mm | 626mm | 635mm |
Front-Center Horizontal | 579.5mm | 586.5mm | 596.5mm | 608.7mm | 623.7mm | 632.7mm |
Wheelbase | 1008mm | 1015mm | 1025mm | 1038mm | 1053mm | 1062mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Trail | 81.7mm very high | 78.3mm high | 75mm high | 71.7mm high | 68.4mm high | 65.1mm high |
Mechanical Trail | 76.8mm | 73.8mm | 70.9mm | 68mm | 65mm | 62.1mm |
Wheel Flop | 26.3mm | 24.7mm | 23.1mm | 21.6mm | 20.1mm | 18.7mm |
Standover Height | 735mm | 757mm | 781mm | 809mm | 835mm | 860mm |
Tire to Pedal Spindle | 57mm 170 mm cranks | 63mm 170 mm cranks | 74mm 170 mm cranks | 85mm 170 mm cranks | 100mm 170 mm cranks | 109mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 111mm 170 mm cranks | 111mm 170 mm cranks | 111mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks | 116mm 170 mm cranks |
4-Star Shimano GRX 800 2X Build
47cm | 50cm | 53cm | 56cm | 59cm | 62cm | |
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 | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Tire Width Max | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm |
Tire Outer Diameter | 712mm | 712mm | 712mm | 712mm | 712mm | 712mm |
Bike Length with Tires | 1720mm | 1727mm | 1737mm | 1750mm | 1765mm | 1774mm |
Handlebar Width | 44mm | 44mm | 44mm | 44mm | 44mm | 44mm |
Stem Length | 90mm | 90mm | 90mm | 90mm | 90mm | 90mm |
Stem Angle | 6deg | 6deg | 6deg | 6deg | 6deg | 6deg |
Published Sizing Recommendations
Height | 4 ft 11 in to 5 ft 3 in | 5 ft 2 in to 5 ft 6 in | 5 ft 5 in to 5 ft 9 in | 5 ft 8 in to 6 ft 0 in | 5 ft 11 in to 6 ft 3 in | 6 ft 2 in to 6 ft 6 in |
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:https://www.ninerbikes.com/products/rlt-9-steel/