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 (72 teeth)
Center Lock disc rotor interface
12x148mm Boost or 12x157 Super Boost thru-axle spacing
Shimano Micro Spline freehub body or SRAM XD 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.

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
axle aluminium 150mm, Ø15mm / 57.1mm	HCCXXX00S2399S	1
Conversion kit — freehub body	HWYABL00S2779S	1
RW adapter KIT 142/ Ø12mm	HWGXXX00S3188S	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)
Shimano Micro Spline MTB 12/157 mm	Freehub body Conversion kit (HWYABL00S2787S)
Shimano MTB 12/150 mm	Freehub body Conversion kit (HWYABL00S2786S) RW adapter KIT 135/ Ø12mm (HWGXXX0002218S)
Shimano MTB 12/157 mm	Freehub body Conversion kit (HWYABL00S2786S)
SRAM XD 12/150 mm	RW adapter KIT 135/ Ø12mm (HWGXXX00S3382S)

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

Spoke Count: 32H. This is the only option on this listing.

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
Center Lock disc rotor interface
12x148mm Boost thru-axle
32-hole drilling
Shimano Micro Spline freehub body (12-speed)
DT Swiss Ratchet System with DEG ratchet (72t), high engagement
Steel sealed cartridge bearings
J-bend (Classic) spokes

Brand	DT Swiss
Model	350
Position	Rear
Discipline	MTB
Brake interface	Center Lock
Axle	12x148mm Boost thru-axle
Hole count	32H
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