The DT Swiss 350 is the brand's mid-range workhorse hub, trusted across road and MTB for its reliability, serviceability and convertible design. This rear hub pairs Boost spacing with the high-engagement DEG ratchet.

Highlights

DT Swiss Ratchet System with the high-engagement DEG ratchet (90 teeth)
Disc 6-bolt (ISO) rotor mount
12x148mm Boost thru-axle spacing
Shimano Micro Spline freehub body for 12-speed cassettes
Steel sealed cartridge bearings for dependable, low-maintenance running

DT Swiss Ratchet System

Engagement is handled by the DT Swiss Ratchet System using the DEG ratchet, a 90-tooth design that delivers high engagement for fast power pick-up. The two opposing toothed rings share load evenly and the freehub can be serviced by hand with no special tools.

Compatibility & fit

This is a rear hub for 12x148mm Boost thru-axle frames with a 28-hole drilling. The rotor mounts via Disc 6-bolt (ISO). The Shimano Micro Spline freehub body accepts Shimano 12-speed Micro Spline cassettes. Spokes are J-bend (Classic) type.

DT Swiss spare parts for this hub

The parts DT Swiss lists for this hub, with DT part numbers. Parts marked ask us are special order.

Bearing service kit: DT Swiss Hub Bearing Kit 2× 6902 (15×28×7 mm) — the hub bearings for this hub in DT's quantities.

Part	DT part no.	Qty in hub
Axle aluminium 148mm, Ø15/48.2mm	HCCXXX00S6450S	1
Ball bearing Ø 15/28x7mm 6902	HSBXXX00N2336S	2
Ring nut M45x2-2MM DEG	HXDXXX00N9037S	1
Spacer Ø15/18x2.95mm	HCD14200N9313S	1
Conversion kit — freehub body	HWYABL00S2787S	1
Service Kit Rear Hub with Ratchet DEG 72T	HWYXXX00N6599S	1

Conversion kits

Convert to	Parts needed (DT part no.)
Shimano MTB 12/148 mm Boost	Freehub body Conversion kit (HWYABL00S2786S)
SRAM XD 12/148 mm Boost	Freehub body Conversion kit (HWYABL00S2779S)

Exploded view, manuals and service videos: DT Swiss support page for this hub.

DT Swiss covers this hub with a 24-month warranty against material and manufacturing defects from the date of purchase. Normal wear items, including bearings and freehub bodies, are not covered. The DT Swiss crash-replacement (Fair Share) programme applies to carbon rims only and does not apply to this product.

For any warranty support, please return the item to Tune Cycles and our team will handle the claim on your behalf.

Brand: DT Swiss 350
Position: rear
Disc 6-bolt (ISO) rotor mount
12x148mm Boost thru-axle
28-hole drilling
Shimano Micro Spline freehub body (12-speed)
DT Swiss Ratchet System with DEG ratchet (90t), high engagement
Steel sealed cartridge bearings
J-bend (Classic) spokes

Brand	DT Swiss
Model	350
Position	Rear
Discipline	MTB
Brake interface	Disc 6-bolt (ISO)
Axle	12x148mm Boost thru-axle
Hole count	28H
Spoke type	J-bend (Classic)
Freehub body	Shimano Micro Spline (12-speed)
Engagement	DT Swiss Ratchet System, DEG ratchet (90t), high engagement
Bearings	Steel sealed cartridge

SKU	APO-DTH350-012
Barcode #	7613052403090
Brand	DT Swiss
Shipping Weight	0.0300kg
Shipping Width	0.160m
Shipping Height	0.060m
Shipping Length	0.220m