DS 450 X xc

45.3-hp Rotax 4-TEC 449cc, liquid-cooled, single-cylinder 4-stroke engine

The DS 450 is equipped with a 449 cc 4-stroke EFI Rotax engine, offers the largest bore (97 mm) and the largest intake valves (38 mm) from the DOHC 4-valve head with 97 x 60.8 mm bore and stroke. The EFI uses the largest throttle body (46 mm), 16-bit CPU with 32-MHz clock speed and an almost straight intake path. With a concept referred to as ''Durchzugskraft'' or flow dynamics optimization, the engine breathes easily and can produce more power. The DS 450 delivers the best power-to-weight ratio.

Shortened spindle

The spindle acts as a lever on the steering ball joints. The longer the lever, the more the kickback is transmitted to the steering when the wheel hits an obstacle. The DS 450 short spindle lever reduces negative steering feedback, providing a more confidence-inspiring ride.

20x10-9 ITP Holeshot GNCC 6-ply rear tires

The DS 450 X xc features 20-in. (508 mm) rear ITP Holeshot GNCC tires mounted on 9-in. (229 mm) black, aluminum ITP T-9 beadlock wheels. The taller lugs of the Holeshot GNCC provide superior traction in demanding race conditions.

No weld, ALTEC twin pyramidal aluminum frame

A maximum strength, no-weld, all-aluminum frame that uses a twin pyramidal structure. Major components are firmly secured with aluminum fasteners called lock-bolts. The frame is stronger yet much lighter than a traditional ladder frame.

Race-inspired radiator grill

3-mm full aluminum chassis skid plate and 5 mm full aluminum swing arm skid plate

R-Type cast aluminum swingarm rear suspension

Features Chromoly hollow rear axle, extended-reach aluminum wheel hubs, aluminum sprocket, cast-aluminum swingarm. For the lowest possible unsprung weight and the most mass centralization.

Black aluminum ITP T-9 Trac-lock wheels

10-in. (254 mm) black, aluminum ITP T-9 front wheels and 9-in. (229 mm) black, aluminum ITP T-9 rear wheels with beadlock rings

Aluminum front bumper, number plate ready

Aluminum front bumper, number plate ready

21x7-10 ITP Holeshot GNCC 6-ply front tires

The DS 450 X xc features 21-in. (533 mm) ITP Holeshot GNCC front tires mounted on 10-in. (254 mm) black, aluminum ITP T-9 wheels with beadlock rings. The taller lugs of the Holeshot GNCC provide superior traction in demanding race conditions.

R-type forged aluminum double A-arms with adjustable caster

The front end of the DS 450 X xc comes with a shim-style caster adjustment. Each shim represents one-degree of adjustment with 3 degrees to 10 degrees of caster adjustment. This allows the racer to completely "dial in" the DS 450 X xc for his or her preference.

7.5-in. (190 mm) factory-set ride height (175-lb rider)

The DS 450 X xc model’s 7.5-inch (101 mm) ride height — assuming a 175-pound rider with gear — reduces the center of gravity for improved cornering capabilities.

Adjustable-width hollow rear axle from 46 in. [1.17 m] to 50 in. [1.27 m] by increments of 0.5 in. [12.7 mm] per spacer

Many of top motocross pros are choosing to race with a rear width that is slightly narrower than the front-end width. This is possible with the DS 450 X mx Chromoly 4140 adjustable-width hollow axle. Adjustment from 46 (1,168 mm) to 50 inches (1,270 mm) is possible with 0.5-inch (13 mm) spacers.

KYB HPG C40 rear shock

Aluminum KYB HPG C40 piggyback rear shock with dual-speed compression, rebound and preload adjustments and 10.5 in. (267 mm) of travel

Extra-strength extended 1-in. (25.4 mm) steering stem with anti-vibe mounts

A +1-inch (25 mm) extra-strength steering stem with anti-vibe mounts comes standard on the DS 450 X xc and the DS 450 X mx. This gives the racer a better feel for the ATV while in an attacking stance out on the course. There is no need to buy an aftermarket stem to be competitive. Mounted to the steering stem is an aluminum 6061-T6 taper-profile handlebar with square racing pad.