Dartmoor Primal Intro 27.5-inch trail mountain bike — one shifter for climbs and changing trail gradients:

Key features

• Wheel size: 27.5 in
• Frame sizes: Small, Medium, Large and XL
• Frame: Hydroformed 6061-T6 aluminium, SRAM UDH hanger, 148 x 12 mm Boost rear axle
• Fork: X-Fusion MIG, 130 mm travel, 15 mm Boost thru-axle, compression and rebound adjustment
• Drivetrain: Microshift Advent 1 x 9, 11–42T cassette
• Brakes: Shimano MT-200 two-piston hydraulic discs, 180 mm rotors
• Rims: Dartmoor Raptor, tubeless ready, 30 mm internal width
• Weight: Approx. 15.10 kg

One chainring, nine gears to choose from

The Primal Intro uses a 30T chainring and an 11–42T nine-speed cassette. You can select a ratio for changes in gradient with one shifter, without a front derailleur to operate. The Microshift Advent drivetrain is paired with Prowheel Charm two-piece cranks.

A 130 mm fork for trail riding

The X-Fusion MIG fork has compression and rebound adjustment, so you can tune its damping within the settings allowed by its instructions. Follow the setup and servicing guidance for the fitted fork. Shimano MT-200 hydraulic brakes use 180 mm rotors; have them adjusted and test them before each ride.

The 27.5-inch Raptor rims carry Crown Gem 2.6-inch tyres. Their 30 mm internal rim width is useful to know when checking replacement tyre compatibility. The rims are tubeless ready, but a conversion also needs suitable tyres, tape, valves and sealant.

Compare the four frame sizes

The suggested rider height is approximately 160–170 cm for Small, 170–180 cm for Medium, 180–190 cm for Large and 190–200 cm for XL. Use these as a starting point, then compare reach, frame clearance and your preferred riding position.

Effective top tube lengths are 589/621/646/675 mm for Small/Medium/Large/XL respectively. The complete measurements below help you compare sizes. Crank arms are 170 mm on Small and Medium, and 175 mm on Large and XL.

Contact points and regular checks

A 780 mm Tornado Hi bar and short Viper stem form the cockpit. The build includes a railed Ferns saddle and aluminium Stream pedals, with a listed weight of approximately 15.10 kg. Check the manufacturer’s intended-use limits and choose routes suited to your ability. Inspect the bike after hard impacts and stop if you find damage or play.

Dartmoor Primal Intro 27.5-inch trail mountain bike — specifications:

Sizing, weight and other details:

• Wheel size: 27.5 in
• Weight: Approx. 15.10 kg

Frame:

• Frame sizes: Small, Medium, Large and XL
• Frame: Hydroformed 6061-T6 aluminium, SRAM UDH hanger, 148 x 12 mm Boost rear axle

Fork:

• Fork: X-Fusion MIG, 130 mm travel, 15 mm Boost thru-axle, compression and rebound adjustment

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: Shimano MT-200 two-piston hydraulic discs, 180 mm rotors

Wheels and rims:

• Rims: Dartmoor Raptor, tubeless ready, 30 mm internal width
• Rims — size and drilling: 27.5 in, 32H

Handlebars:

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

Stem:

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

Headset:

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

Tyres:

• Tyres: Vee Tire Crown Gem, 27.5 x 2.6 in

Cranks:

• Cranks: Prowheel Charm, two-piece, 170 mm (Small/Medium) / 175 mm (Large/XL)

Bottom bracket:

• Bottom bracket: BSA/Euro, 73 mm

Chainring or sprocket:

• Chainring: 30T, 76 mm BCD

Front hub:

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

Rear hub and driver:

• Rear hub: Dartmoor Reel Boost cassette hub, aluminium, cartridge bearings, 148 x 12 mm Boost axle, 32H

Chain:

• Chain: KMC Z9

Saddle and seatpost:

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

Grips and bar ends:

• Grips: 135 mm, lock ring

Pedals:

• Pedals: Dartmoor Stream, aluminium

Frame geometry:

• Small geometry: Reach 415 mm; Stack 622 mm; Seat tube length 410 mm; Effective top tube 589 mm; Chainstay length 418 mm; Head tube length 110 mm; Head angle 65°; Effective seat angle 72°; BB drop 47 mm; Wheelbase 1134 mm; Standover 774 mm
• Medium geometry: Reach 445 mm; Stack 622 mm; Seat tube length 430 mm; Effective top tube 621 mm; Chainstay length 418 mm; Head tube length 120 mm; Head angle 65°; Effective seat angle 72°; BB drop 47 mm; Wheelbase 1169 mm; Standover 774 mm
• Large geometry: Reach 470 mm; Stack 622 mm; Seat tube length 460 mm; Effective top tube 646 mm; Chainstay length 418 mm; Head tube length 120 mm; Head angle 65°; Effective seat angle 72°; BB drop 47 mm; Wheelbase 1194 mm; Standover 781 mm
• XL geometry: Reach 495 mm; Stack 622 mm; Seat tube length 460 mm; Effective top tube 675 mm; Chainstay length 418 mm; Head tube length 130 mm; Head angle 65°; Effective seat angle 72°; BB drop 47 mm; Wheelbase 1223 mm; Standover 781 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.