CTM Zephyr Comp 29-inch trail mountain bike — one shifter for trail rides and changing gradients:

Key features

• Wheel size: 29 in
• Frame: 6061 aluminium, 148 x 12 mm Boost rear axle, SRAM UDH hanger
• Fork: Suntour XCM34 Boost, 130 mm travel
• Drivetrain: Shimano 1 x 9, 11–46T cassette
• Brakes: Shimano MT200 hydraulic / SMRT10 S/M
• Frame sizes: Medium, Large and XL

A choice of gears for changing gradients

The Zephyr Comp has a 32T chainring and 11–46T cassette. You can choose a gear for the gradient with one shifter, without operating a front derailleur. Keep the drivetrain adjusted and lubricated according to its instructions.

A 130 mm suspension fork

The Suntour XCM34 Boost fork provides 130 mm of travel. Follow its setup and servicing instructions. Check the wheel fixings and test both brakes before every ride.

Check your riding position

The suggested rider height is approximately 160–175 cm for Medium, 175–185 cm for Large and 185–205 cm for XL. Compare reach, standover clearance and your preferred position with a bike you know. Height is a starting point rather than a guarantee of fit.

The WTB STi30 rims are tubeless ready. Before converting, check that the fitted tyres are suitable too and use compatible tape, valves and sealant.

Choose routes within the bike’s intended use and your ability. Have it assembled and adjusted before the first ride, check it regularly and stop riding if you find damage or play.

CTM Zephyr Comp 29-inch trail mountain bike — specifications:

Sizing, weight and other details:

• Wheel size: 29 in
• Level: Beginner to intermediate

Frame:

• Frame: 6061 aluminium, 148 x 12 mm Boost rear axle, SRAM UDH hanger
• Frame sizes: Medium, Large and XL
• Frame model: CTM Zephyr 29
• Frame fittings: ISCG05 chain-guide mount, internal cable routing

Fork:

• Fork: Suntour XCM34 Boost, 130 mm travel
• Fork wheel size: 29 in
• Fork axle: 15 x 110 mm Boost thru-axle
• Fork spring and damping: Coil spring, oil damping

Drivetrain:

• Drivetrain: Shimano 1 x 9, 11–46T cassette
• Cassette: Shimano Cues CS-LG300, 9-speed, 11–46T
• Rear derailleur: Shimano Cues RD-U4000
• Shifter: Shimano Cues SL-U4000, 9-speed

Brakes and controls:

• Brakes: Shimano MT200 hydraulic / SMRT10 S/M

Handlebars:

• Bar: CTM N04, aluminium, 740 mm width, 25.4 mm (1 in) rise, 31.8 mm clamp

Stem:

• Stem: CTM 7140, aluminium, 45 mm

Headset:

• Headset: NECO H156, cartridge bearings

Wheels and rims:

• Rims: WTB STi30 TCS, 29 in, 32H, tubeless ready

Tyres:

• Front tyre: WTB Trail Boss Comp, 29 x 2.4 in
• Rear tyre: WTB Trail Boss Comp, 29 x 2.4 in

Cranks:

• Cranks: Shimano FC-UT400, 32T, 170 mm

Front hub:

• Front hub: Shimano TC500, 15 x 110 mm Boost axle

Rear hub and driver:

• Rear hub: Shimano TC500-B, 12 x 148 mm Boost axle

Chain:

• Chain: KMC XGLIDE

Saddle and seatpost:

• Saddle: CTM Cloud M
• Seatpost specification: CTM LCSP-53, 31.6 mm diameter, 350 mm length

Pedals:

• Pedals: VPE 537

Bottom bracket:

• Bottom bracket: Shimano BB

Safety while riding

Riding, falls and impacts put loads through the bike and can damage components. No bike is indestructible: parts can wear out or become damaged. Check the frame, fork, bars, wheels, axles, cranks, pedals, brakes and bolted connections before every ride. Inspect the bike after a hard impact and stop riding if you find looseness, cracks or damage. Have any problem checked and repaired before riding again.

Wear a properly fitted helmet and suitable protective pads. Read our important information before buying and using a bike for assembly, servicing and riding checks.

Important information about your new bike

• Read the instructions and warranty supplied with the bike before riding.
• The bike is delivered approximately 90% assembled for shipping.
• Before the first ride, fit the pedals, saddle and handlebars, and the front wheel where required. Follow the assembly instructions and check all components.
• Have a professional bike workshop carry out a pre-ride inspection. This is a paid service; keep the receipt as proof for the manufacturer’s warranty and follow the warranty terms supplied with your bike.

The manufacturer’s warranty is separate from your statutory consumer rights. Continue to inspect and service the bike throughout its use.

Frame geometry