The CG 39 SL is an original purpose-built gravel race wheelset, made for tackling any type of gravel, especially the steep stuff. As BMC’s lightest carbon wheelset, you are sure to love who how this wheelset rides and races and it checks all the boxes on what you need in a great wheel – fast, light and incredibly smooth. These wheels will make your legs feel like diamonds as you take on anything the gravel world can throw at them.
Technology
Crash Replacement Policy
Get the best use out of your wheels
Product Information
Product Details
Rim:
Carbon | Hook Type | Tubeless Ready
Spokes:
Carbon | Aero bladed | Straight-Pull
Hubs:
Star Ratchet
Brake Interface:
Centerlock | Disc Only
Tires
Tire Width (Min / Max):
30mm / 71mm
Max. Tire Pressure (Tubeless / Tube):
Tubeless: max. 5.8bar (104psi) with 30mm tires, max. 2.0bar (29psi) with 71mm tires | Tube Type: max. 7.2bar (104psi) with 30mm tires, max. 2.5bar (36psi) with 71mm tires
Disclaimer:
Due to safety reasons, always follow the pressure recommendations of the tire manufacturer but never exceed the maximum pressure value stated on this site. Please also check frame & fork max. allowable tire width – this can differ from tire width max. values in this table.
Additional Information
Max. System Weight:
120kg
Intended Use:
ASTM Classification Level 2
General Product Safety Regulation (GPSR):
Safety Instructions GPSR (EU)
Responsible person according to GPSR (EU)
Accessories
In the Box:
Tubeless Rim Tape, Preinstalled | Tubeless Valve
| Size | Front Wheel | Rear Wheel |
|---|---|---|
| Weight | 631g | 750g |
| Rim Material | Carbon | Hook Type | Carbon | Hook Type |
| Rim Depth | 39mm | 39mm |
| Rim Internal Width | 25.0mm | 25.0mm |
| Rim External Width | 32.0mm | 32.0mm |
| Rim Diameter | 700c | 622x25 ETRTO | 700c | 622x25 ETRTO |
| Spoke Count | 21 | 2:1 Spoke Lacing | 24 |
| Tubeless Information | Tubeless Ready | Tubeless Ready |
| Spoke Length (D / N-Drive) | 278mm / 292mm | 286mm / 287mm |
| Spoke Nipple | Alloy | External | Alloy | External |
| Thru Axle | 12 x 100mm | 12 x 142mm |
