Niner SIR 9 – 2-Star NX Eagle – 29 2019
2019 Mountain
Estimate price |
2,600$
Weight | 12.7 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 27.5" / 29" -
Travel Front 120mm -
Fork RockShox Judy Gold RL
-
Groupset NX Eagle -
Suspension Hardtail -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
SM
158cm - 171cm
MD
168cm - 180cm
MD
168cm - 180cm
LG
178cm - 189cm
LG
178cm - 189cm
XL
186cm - 199cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Reynolds 853 air hardened steel, welded
Suspension Fork
ROCKSHOX JUDY GOLD RL SOLO AIR, 120MM, 110X15MM, 51MM OFFSET
Rear Shock
N/A
Drivetrain
Rear Derailleur
SRAM NX EAGLE 12SP
Front Derailleur
N/A
Shift Levers
SRAM NX EAGLE 12SP
Cassette
SRAM PG 1230 11-50T
Crank
SRAM NX EAGLE DUB 32T
Bottom Bracket
73mm PF30 BB Shell (Adapters Required For BSA Type BBs); compatible with Biocentric 30 BB
Chain
SRAM NX EAGLE 12SP
Wheels
Rims
Boost 12x148mm
Tires
MAXXIS MINION DHF 3C/EXO/TR 29x2.5 or REKON+ DC/EXO/TR 27.5x2.8
Brakes
Brakes
SRAM LEVEL
Brake Levers
SRAM LEVEL
Disk Rotors
180/160MM SRAM G2CS ROTORS
Cockpit
Stem
RACE FACE AEFFECT R 40MM, 35MM CLAMP
Handlebar
RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP
Grips
NINER GRRRIPS L/O NYLON FLANGED
Headset
NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40
Seat
Saddle
NINER CUSTOM TR WITH CR-MO RAILS, PRINTED NINER GRAPHIC
Seatpost
NINER ALLOY SEAT POST, 370MM, NINER GRAPHIC
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | SM | MD | MD | LG | LG | XL | XL |
|---|---|---|---|---|---|---|---|---|
| Wheels | 27" | 29" | 27" | 29" | 27" | 29" | 27" | 29" |
| Rider Min Height | 158 cm | 158 cm | 168 cm | 168 cm | 178 cm | 178 cm | 186 cm | 186 cm |
| Rider Max Height | 171 cm | 171 cm | 180 cm | 180 cm | 189 cm | 189 cm | 199 cm | 199 cm |
About this model
SIR 9 – 2-Star NX Eagle – 29 is a Niner Sir model. There are 44 bikes that carry this model name. You can easily view all of the Niner Sir bikes models from 2019, here.
Model range prices
Niner SIR 9 – 2-Star NX Eagle – 27.5+ 2019 is the most affordable bike of this model and has a price of 2600$. On the other hand, Niner SIR 9 – 5-Star X01 Eagle – 29 2019, is the most expensive and costs 6500$.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Average price for Trail bikes
If you want an acceptable Trail bike you should know that the average price is 2762$. However, even though the average price of a Trail bike is lower, you might still be able to get a top-quality bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, this bike was made available in 2019 for 2600$. Comparing this to the average Trail bike price, we see that the price is 6.23% lower.
Average weight for Trail bikes
If we make a quick analysis of the average weight of a Trail bike, we get 12.98 kg (28.62 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
SIR 9 – 2-Star NX Eagle – 29 weighs 12.7 kg (28 lbs) and is slightly lighter than the average. To sum up, it’s 2.2% lighter than the average weight of Trail bikes.
SIR 9 – 2-Star NX Eagle – 29 components
Fork
This bike has the RockShox Judy Gold RL fork installed. The fork’s travel is 120mm. Bike forks are perfect to absorb shocks and provide a great riding experience overall. In short, you should always ensure you have a good fork when purchasing a bike.
Wheels size
When leaving the production line, the SIR 9 – 2-Star NX Eagle – 29 model has 27.5″ aluminum wheels. 27.5″ wheels will reach higher speeds than smaller-sized wheels. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The SIR 9 – 2-Star NX Eagle – 29 comes with Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, these are ideal for anyone.
Sizes
SIR 9 – 2-Star NX Eagle – 29 comes in 8 sizes, that range from 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, you won’t have a problem finding one that suits you.