Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 20" -
Travel Front 80mm -
Fork Suntour XCM
-
Suspension Hardtail -
Drivetrain Single Speed -
Brakes Mechanical Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Rocky Mountain 6061 Alloy | Threaded BB | 135mm | Tapered Zerostack Headtube Rear Triangle
Suspension Fork
Suntour XCM JR Air 80mm
Drivetrain
Cassette
14T
Crank
Rocky Mountain Microdrive 2PC | 28T | 76mm Asymmetrical BCD | 24mm Spindle | Crank Length = 127mm
Bottom Bracket
Rocky Mountain Sealed - Shimano Compatible
Chain
KMC Z1
Wheels
Front Hub
Rocky Mountain Nuts
Rear Hub
Rocky Mountain Sealed 10x135mm
Rims
Rocky Mountain JR30 Tubeless | 32H / Tubeless Compatible - Tape / Valves / Sealant Not Incl
Spokes
2.0 Stainless
Tires
F: Kenda K-Rad 2.125 // R: Kenda K-Rad 2.125
Brakes
Brakes
Mechanical Disc
Cockpit
Stem
Rocky Mountain 31.8 XC | 7° Rise | All Sizes = 40mm
Handlebar
Rocky Montain Jr | 600mm Width |25mm rise | 9° Backsweep |5° Upsweep | 31.8 | For 19mm Grips
Grips
SGD Slater JR Lock On
Headset
Rocky Mountain ZS44|56 | Loose Ball Bearings | 1-1/8" Reducer Crown Race
Seat
Saddle
Rocky Mountain Pivotal
Seatpost
Rocky Mountain Pivotal 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | kids |
|---|---|
| Stack Reach Ratio | 1.335 mm |
| Front Center | 557 mm |
| Rake | 40 mm |
| Stack | 454 mm |
| Reach | 340 mm |
| Top Tube Length | 462 mm |
| Seat Tube Angle | 75 ° |
| Seat Tube Length | 240 mm |
| Head Tube Angle | 68.5 ° |
| Head Tube Length | 100 mm |
| Chainstay Length | 310 mm |
| Wheelbase | 866 mm |
| Bottom Bracket Drop | 15 mm |
| Standover Height | 604 mm |
| Wheels | 20" |
| Rider Min Height | 120 cm |
About this model
Flow Jr 20 belongs to the Rockymountain Flow model. There are 7 bikes that carry this model name. You can get a glimpse at all models from 2024, by clicking on this link.
Model range prices
Rocky Mountain Flow Jr 24 2024 is the most economical model, with a starting price of 869$. Rocky Mountain Flow 2024 on the other hand costs 1259$, and is the most expensive model.
Safety
Your safety is a top priority so always wear a helmet when you ride your bike. Moreover, wear the right clothing. You want to be visible to other drivers, so avoid wearing dark clothing.
Average price for Dirt Jump bikes
Our math shows that the average cost of a dependable Dirt Jump bike is 863$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Dirt Jump bike. In conclusion, always check bike reviews and their components before making a purchase to make sure you don’t overpay.
Furthermore, this bike was made available in 2024 for 869$. Comparing this to the average Dirt Jump bike price, we see that the price is 0.7% more expensive.
Overview of components
Fork
The Suntour XCM is included from the factory. It has a travel distance of 80mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Wheels size
When leaving the production line, the Flow Jr 20 model has 20″ aluminum wheels. This wheel size is used on bike models like BMX, children, or folding bikes. In conclusion, you can use them better on-road, and less on technical terrain.
Brakes
We ride faster and faster, so a good braking system is essential on a bike nowadays. The Flow Jr 20 comes with Mechanical Disc brakes. They deliver good performance and cost less than hydraulic disk brakes. However, they don’t have the stopping power of hydraulic brakes.