Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 29" -
Travel Front 120mm -
Fork Fox Factory Float 34
-
Groupset X01, X01 Eagle -
Suspension Hardtail -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
MD
168cm - 180cm
LG
178cm - 189cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
SIR 9 - SLATE BLUE/ORANGE
Suspension Fork
FOX 34 FLOAT FACTORY FIT4, 3 POSITION W/ ADJ, KASHIMA COAT, 120MM, 110X15MM
Rear Shock
N/A
Drivetrain
Rear Derailleur
SRAM Eagle X01, 12-speed
Front Derailleur
N/A
Shift Levers
SRAM X01 EAGLE 12SP
Cassette
SRAM EAGLE XG 1295, 10-50T
Crank
SRAM X1 EAGLE CARBON GXP 32T CNC RING
Bottom Bracket
SRAM%20PF30
Chain
SRAM X01 EAGLE 12SP
Chain Guide
N/A
Pedals
N/A
Wheels
Front Hub
DT Swiss 350, 15mm x 110mm, 12mm x 148mm, XD Driver
Rear Hub
DT Swiss 350, 15mm x 110mm, 12mm x 148mm, XD Driver
Rims
Niner Carbon XC
Spokes
32 count front and rear
Tires
29" MAXXIS ARDENT DC/EXO/TR 2.4
Brakes
Brakes
SRAM GUIDE RSC
Brake Levers
SRAM GUIDE RSC
Cockpit
Stem
RACE FACE TURBINE BASIC 50MM, 35MM CLAMP
Handlebar
RACE FACE SIXC 820MM WIDE, 20MM RISE, 35MM CLAMP
Grips
NINER GRRRIPS L/O FLANGED
Headset
NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40
Seat
Saddle
NINER CUSTOM TR WITH CRN-TI RAILS, PRINTED NINER GRAPHIC
Seatpost
KS LEV INTEGRA
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.5 mm | 1.46 mm | 1.43 mm | 1.41 mm |
| Bottom Bracket Height | 322 mm | 322 mm | 322 mm | 322 mm |
| Front Center | 696 mm | 714 mm | 740 mm | 767 mm |
| Rake | 54 mm | 53 mm | 54 mm | 54 mm |
| Trail | 93 mm | 94 mm | 93 mm | 93 mm |
| Stack | 607 mm | 616 mm | 630 mm | 648 mm |
| Reach | 406 mm | 421 mm | 441 mm | 461 mm |
| Top Tube Length | 591 mm | 599 mm | 623 mm | 648 mm |
| Seat Tube Angle | 74 ° | 74 ° | 74 ° | 74 ° |
| Seat Tube Length | 396 mm | 421 mm | 485 mm | 533 mm |
| Head Tube Angle | 68 ° | 68 ° | 68 ° | 68 ° |
| Head Tube Length | 100 mm | 110 mm | 125 mm | 145 mm |
| Chainstay Length | 423 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 1114 mm | 1132 mm | 1158 mm | 1185 mm |
| Bottom Bracket Drop | 52 mm | 52 mm | 52 mm | 52 mm |
| Standover Height | 717 mm | 735 mm | 787 mm | 826 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |
Model Overview
SIR 9 5-STAR is part of the Niner Sir model. There are 44 bikes that carry this model name. Take a sneak peek at all Niner Sir bikes models from 2018, by clicking here.
Model range prices
Niner SIR 9 27.5+ 1-Star 2018 is the most economical model, with a starting price of 2300$. Niner SIR 9 5-STAR 2018 on the other hand costs 5950$, and is the most expensive model.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Trail bikes
If you want an acceptable Trail bike you should know that the average price is 2762$. However, even though the average price of a Trail bike is lower, you might still be able to get a top-quality bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Furthermore, this bike was made available in 2018 for 5950$. If we compare this with the average Trail bike cost we notice that the price is 115.42% higher.
Overview of components
Fork
This bike has the Fox Factory Float 34 fork installed. The fork’s travel is 120mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. In conclusion, always look for a fork with decent travel when you buy a bike.
Wheels size
The wheels on SIR 9 5-STAR are the 29″ carbon type. These wheels are more forgiving when you go over roots, rocks, bumps, or other obstacles you encounter on your ride. However, the 29″ wheels will add a little more weight to the bike itself.
Brakes
For your safety, it is important to have quality breaks on your bike. Niner SIR 9 5-STAR has Hydraulic Disc brakes installed. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.
Sizes
There are 4 sizes available for this model. Rider height can be anywhere between 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, finding one for you shouldn’t be a problem.
Dropper post
Every bike should have a dropper post, and this one does. A dropper post is a must-have these days if you’re riding anything remotely technical. The main benefit of a dropper post is increased safety while riding. As mentioned above, the lever system allows you to quickly move the saddle out of the way when approaching descents or trail obstacles.