3T Racemax Boost Italia Discus 45/40 Rival XPLR AXS 1x12

Name: 3T Racemax Boost Italia Discus 45/40 Rival XPLR AXS 1x12
Brand: 3T

2025 RoadGravel Electric bicycle Manufacturer page

Last known price: $9,899

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 40t / 10–44t
Gear range: 440%
Battery: 236 Wh
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

51cm 157–171
54cm 168–180
56cm 176–186
58cm 183–195

Components

14 of 16 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

3T’s in-house filament-winding using a combination of high-strength/high-stiffness fibers, combined with RTM resin injection. Made in Italy Not identified

Electric system

2 parts

Battery
- Mahle
Motor
- Mahle

Suspension

1 part

Fork
- 3T

Drivetrain

4 parts

Brakes

1 part

Brakes
- SRAM Rival AXS HRD Shift-Brake System

Wheels and tires

2 parts

Rims
- 3T
Tires
- Pirelli

Cockpit and contact points

5 parts

Handlebar
- 3T
Headset
- 3T
Saddle
- San Marco
Seatpost
- 3T
Stem

More integrale (51: 80mm, 54: 90mm, 56: 100mm, 58: 110mm) Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 374mm

Stack 566mm

Wheelbase 1013mm

Head angle 70.7°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	364	374	382	390
Stackmm	544	566	586	606
Top tube lengthmm	518	536	549	563
Seat tube lengthmm	463	490	518	545
Head tube lengthmm	147	161	180	201
Head tube angle	69.2°	70.7°	71.7°	72.2°
Seat tube angle	74°	74°	74°	74°
Chainstay lengthmm	418	418	418	418
Wheelbasemm	1018	1013	1019	1028
Front centermm	612	607	612	622
Bottom bracket dropmm	77	77	75	73
Bottom bracket heightmm	272	272	274	276
Fork rakemm	61	54	54	53
Trailmm	67	65	59	56
Stack/reach ratio	1.50	1.51	1.53	1.55

Not published by the manufacturer: Standover height, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 44
Lowest gear: 26.4 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Electric system

Battery capacity: 236 Wh

Additional specifications

Battery: Mahle iX250 (236Wh) hidden battery included. Optional 172 Wh Range Extender available
Tire clearance: Maximum tire width: 54c
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

26.4 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

116.0 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Electronic

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.1 km/h
Highest gear: 44.4 km/h

Total gear range 440%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 26.4–116.0 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class