Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Steel -
Wheels 27.5" -
Travel Front 120mm -
Fork Fox Factory Float 34
-
Groupset GX Eagle, Truvativ Stylo -
Suspension Hardtail -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
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
Shift Levers
SRAM GX EAGLE 12SP
Cassette
SRAM EAGLE XG 1275, 10-50T
Crank
SRAM STYLO 7K EAGLE PF30 32T
Bottom Bracket
SRAM%20PF30
Chain
SRAM GX EAGLE 12SP
Wheels
Tires
29" MAXXIS ARDENT DC/EXO/TR 2.4 or 27.5+ MAXXIS REKON+ DC/EXO/TR 2.8
Brakes
Brakes
SRAM GUIDE R
Brake Levers
SRAM GUIDE R
Cockpit
Stem
RACE FACE AEFFECT R 50MM, 35MM CLAMP
Handlebar
RACE FACE AEFFECT R 780MM WIDE, 20MM RISE, 35MM CLAMP
Headset
NINER INTERNAL ZS SHIS DESCRIPTION ZS44/28.6|ZS56/40
Seat
Saddle
NINER CUSTOM TR WITH CR-MO RAILS, PRINTED NINER GRAPHIC
Seatpost
KS LEV SI
Model Overview
SIR 9 3-STAR completes the Niner Sir model. 44 bikes variations carry this model name so far. Check out the entire range from 2018 of this model, by clicking this link.
Model range prices
Niner SIR 9 27.5+ 1-Star 2018 is the cheapest bike model and costs 2300$. Niner SIR 9 5-STAR 2018 is the most expensive one and costs 5950$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Trail bikes average price
If you want to purchase a solid Trail bike, it is important to know that the average cost is 2762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Trail bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
When Niner released this model in 2018, its price was 3950$. Doing a quick comparison, we notice that SIR 9 3-STAR price is 43.01% more expensive than the average cost of a Trail bike.
SIR 9 3-STAR components
Fork
The fork installed on this bike is the Fox Factory Float 34 model. The travel on this model 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
When leaving the production line, the SIR 9 3-STAR model has 27.5″ 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
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. These kinds of brakes are among the most popular models used on bikes. To sum up, you can ride your bike with confidence.
Sizes
Niner SIR 9 3-STAR 2018 is available in one size only. In short, make sure you double-check if it fits you.
Dropper post
A dropper post is included with the SIR 9 3-STAR. 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.