Dartmoor Sparrow Intro Mullet 29/27.5-inch trail mountain bike — a single-chainring setup for exploring your local trails:

Key features

• Wheel sizes: 29 in front / 27.5 in rear
• Frame sizes: Medium and Large
• Suggested rider height: Medium: approx. 160–175 cm; Large: approx. 175–185 cm
• Fork: Suntour XCM34, 130 mm travel, 15 mm Boost thru-axle
• Drivetrain: Microshift Advent 1 x 9, 11–42T cassette
• Brakes: Two-piston hydraulic discs, 180 mm rotors
• Rims: Dartmoor Raptor, tubeless ready, 30 mm internal width
• Weight: Approx. 15.25 kg

One shifter for the trail ahead

A single chainring keeps front shifting out of your ride. The Intro uses a 32T chainring and nine-speed 11–42T cassette, giving you a choice of ratios as the gradient changes. Choose a gear before a steep section and keep the drivetrain adjusted and lubricated.

What does mullet mean?

The front wheel is 29 inches and the rear wheel is 27.5 inches. The larger front wheel has a shallower approach angle to a given obstacle than a smaller wheel. Handling also depends on geometry, tyres, setup and the rider.

A 130 mm fork and hydraulic brakes

A Suntour XCM34 fork provides 130 mm of travel with a 15 mm Boost thru-axle. Two-piston hydraulic brakes use 180 mm rotors. Have the bike adjusted and test the brakes before riding.

Choose your frame size

The suggested rider height is approximately 160–175 cm for Medium and 175–185 cm for Large. Compare reach, frame clearance and your preferred position with a bike you already know. Body proportions and riding style matter alongside height.

Tubeless-ready rims give you an upgrade option

The Raptor rims have a 30 mm internal width and are tubeless ready. Before converting, check that the fitted tyres are suitable too, and use compatible tape, valves and sealant. A tubeless-ready rim alone does not mean the complete wheel is ready to run without an inner tube.

Wear suitable protective equipment, follow the component setup instructions and inspect the bike after hard impacts. The listed weight is approximately 15.25 kg.

Dartmoor Sparrow Intro Mullet 29/27.5-inch trail mountain bike — specifications:

Sizing, weight and other details:

• Wheel sizes: 29 in front / 27.5 in rear
• Suggested rider height: Medium: approx. 160–175 cm; Large: approx. 175–185 cm
• Weight: Approx. 15.25 kg

Frame:

• Frame sizes: Medium and Large
• Frame: Dartmoor Sparrow Intro, hydroformed 6061-T6 aluminium

Fork:

• Fork: Suntour XCM34, 130 mm travel, 15 mm Boost thru-axle
• Fork wheel size: 29 in

Drivetrain:

• Drivetrain: Microshift Advent 1 x 9, 11–42T cassette
• Cassette: Microshift Advent H093, 11–42T
• Rear derailleur: Microshift Advent M619M, 1 x 9
• Shifter: Microshift Advent Trail M9195-R, 9-speed

Brakes and controls:

• Brakes: Two-piston hydraulic discs, 180 mm rotors

Wheels and rims:

• Rims: Dartmoor Raptor, tubeless ready, 30 mm internal width
• Rims — sizes and drilling: 29 in front / 27.5 in rear, 32H

Rear hub and driver:

• Rear hub spacing and axle: 135 x 10 mm
• Rear hub: Aluminium cassette hub, sealed cartridge bearings, 135 x 10 mm quick release, 32H

Handlebars:

• Bar: Dartmoor Tornado Low, aluminium, 780 mm width, 31.8 mm clamp

Stem:

• Stem: Dartmoor Viper, aluminium, Short, 31.8 mm clamp

Headset:

• Headset: Dartmoor Blink, cartridge bearings, IS42/IS52

Tyres:

• Front tyre: Vee Tire Crown Gem, 29 x 2.3 in
• Rear tyre: Vee Tire Crown Gem, 27.5 x 2.35 in

Cranks:

• Cranks: Prowheel Charm, 170 mm (Medium) / 175 mm (Large)

Bottom bracket:

• Bottom bracket: BSA/Euro, 73 mm

Chainring or sprocket:

• Chainring: 32T, 104 mm BCD

Front hub:

• Front hub: Dartmoor Reel Boost, aluminium, sealed cartridge bearings, 110 x 15 mm Boost axle, 32H

Chain:

• Chain: KMC Z9

Saddle and seatpost:

• Saddle: Dartmoor Ferns, railed
• Seatpost: Aluminium, 30.9 mm diameter, 350 mm length (Medium) / 400 mm (Large)

Grips and bar ends:

• Grips: 135 mm, lock ring

Pedals:

• Pedals: Dartmoor Vibe

Frame geometry:

• Medium geometry: Reach 440 mm; stack 630 mm; seat tube 430 mm; effective top tube 609 mm; chainstay 427 mm; head tube 110 mm; head angle 66°; effective seat angle 75°; BB drop 47/66 mm (manufacturer’s listed order); wheelbase 1172 mm; standover 782 mm
• Large geometry: Reach 470 mm; stack 630 mm; seat tube 450 mm; effective top tube 639 mm; chainstay 427 mm; head tube 110 mm; head angle 66°; effective seat angle 75°; BB drop 47/66 mm (manufacturer’s listed order); wheelbase 1202 mm; standover 793 mm

Warranty registration

Register your purchase to activate the stated two-year manufacturer’s warranty, following the terms supplied with your bike. Keep the purchase receipt and the receipt for the initial professional service.

Replacement parts under a claim

If a claim is accepted and the original product or part is unavailable, the manufacturer or seller may provide an equivalent replacement. Its appearance or construction may differ, while its functional specification remains suitable for the original intended use. This does not affect your statutory consumer rights.

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.