Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 700c -
Groupset Force eTap -
Suspension Rigid -
Drivetrain 2 × 12 Electronic -
Brakes Hydraulic Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Full monocoque carbon
Suspension Fork
Full monocoque carbon
Drivetrain
Rear Derailleur
SRAM Force eTap AXS
Front Derailleur
SRAM Force eTap AXS
Shift Levers
SRAM Force eTap AXS 2x12
Cassette
SRAM Force CS XG-1270 12sp 10-33T
Crank
SRAM Force D2 Dub 48/35T
Chain
SRAM Force
Pedals
Not included
Wheels
Rims
LiTE Aero w. thru-axle and centerlock 12mm
Tires
Panaracer Race D Evo4 700x28C
Brakes
Brakes
Front: SRAM Force hydraulic disc brake, Rear: SRAM Force hydraulic disc brake
Cockpit
Stem
Ritchey Comp 4-Axis-44 6D Aluminium, 31,8x100mm
Handlebar
Ritchey Comp Evo Curve, 420 mm.
Headset
FSA No 42 1 1/8"
Seat
Saddle
Ritchey Comp Streem
Seatpost
Ritchey Comp 2-Bolt Aluminium, 31,6x400mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 48cm | 51cm | 54cm | 57cm | 60cm |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.3 mm | 1.36 mm | 1.45 mm | 1.5 mm | 1.51 mm |
| Bottom Bracket Height | 270.5 mm | 273 mm | 273 mm | 275.5 mm | 275.5 mm |
| Front Center | 573 mm | 579 mm | 585 mm | 595 mm | 620 mm |
| Rake | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm |
| Trail | 59.3 mm | 59.3 mm | 56.4 mm | 56.4 mm | 56.4 mm |
| Stack | 495.8 mm | 517.1 mm | 552.2 mm | 573.6 mm | 602.3 mm |
| Reach | 381.1 mm | 380.3 mm | 379.9 mm | 383.1 mm | 399.3 mm |
| Top Tube Length | 520 mm | 535 mm | 545 mm | 560 mm | 585 mm |
| Seat Tube Angle | 74.5 ° | 73.5 ° | 73.5 ° | 73 ° | 73 ° |
| Seat Tube Length | 480 mm | 510 mm | 540 mm | 570 mm | 600 mm |
| Head Tube Angle | 72.5 ° | 72.5 ° | 73 ° | 73 ° | 73 ° |
| Head Tube Length | 95 mm | 120 mm | 155 mm | 180 mm | 210 mm |
| Chainstay Length | 403 mm | 403 mm | 403 mm | 405 mm | 405 mm |
| Wheelbase | 964 mm | 971 mm | 977 mm | 990 mm | 1015 mm |
| Bottom Bracket Drop | 72 mm | 70 mm | 70 mm | 67 mm | 67 mm |
| Standover Height | 713 mm | 739 mm | 769 mm | 797 mm | 825 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 |
Model Overview
RD4 is a Principia Rd4 model. 1 bike variation carries this model name so far.
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.
Race bikes average price
Our math shows that the average cost of a dependable Race bike is 3350$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Race bike. As a general rule of thumb, you should always read reviews about the bike and its components before buying it to ensure you don’t pay too much.
This bike was released in 2023 and its price was 5308$. Doing a quick comparison, we notice that RD4 price is 58.45% higher than the average cost of a Race bike.
RD4 components
Fork material
The fork is made out of carbon, so, it’s a great addition to the bike’s value. However, carbon forks should be regularly inspected for damage because even the smallest crack could cause the fork to fall apart.
Wheels
The wheels on RD4 are the 700c aluminum type. There is no doubt, that 700c wheels are very popular on all road bike models. However, these wheels don’t perform so well when passing over obstacles.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.