DMR Sect Dirt Jump Bike

(1)
4002389
  • DMR 4130 Chromoly frame
  • RST Dirt 100 fork w/ Rebound Adjustment
  • Tektro M275 Hydraulic Disc Brakes
£0.00
Excl. Tax: £0.00
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Built with care: Our mechanics fully assemble your bike before it's carefully packaged and shipped to you.

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At Tweeks Cycles, we ensure your bike arrives fully assembled and, most importantly, well packaged so it arrives with you as it left us.

Upon delivery, simply unpack it, attach any included pedals (believe it or not, some bikes don’t come with pedals!), adjust the handlebars, and you're ready to ride!

It’s all super simple!

BUT! Please take extra care when fitting any pedals that are provided with your bike. Pedals are side specific and MUST be fitted to the correct side of the bike. They are usually clearly labelled Left and Right. Failure to do so will permanently damage the bike, void the bikes warranty and lead to many tantrums, for children or grown children alike!

Comprehensive 14-Point Inspection

Each bike undergoes a meticulous 14-point inspection to guarantee optimal condition and performance:

  • Ensure Cycle is free of any mechanical damage, paint chips or missing parts
  • Grease seat tube, secure seat clamp, make sure the saddle is level and ensure all fixings are secure
  • Ensure handlebar, stem and brake/gear levers are secured
  • Assess headset for play or tightness
  • Ensure handlebar tape or grips are fitted securely
  • Ensure wheel nuts, quick-release levers or through axles are tightened (please note: some adult mountain bikes come with the front wheel removed for transport), true the wheels for optimal alignment and check wheel bearings for proper adjustment
  • Inflate tyres to the correct pressure
  • Ensure front and rear brakes operate correctly. Bleed hydraulic brakes if required
  • Ensure pedal threads are greased
  • Test all gears to ensure smooth operation
  • Check suspension system for correct operation and ensure bolts are tight (if required)
  • Ensure smooth bottom bracket rotation with no free play and secure crank bolts
  • Check cable/house routing and that cable ends are fitted
  • Install reflectors and bell (to be done by customer)

This thorough process ensures your bike is in peak condition upon arrival. We do not fit mudguards or other accessories prior to shipping as these are likely to be damaged in transit.

Note on Electric Bikes

Due to shipping restrictions, in some circumstances you may receive your new electric bike and its battery separately. This is due to carriage restrictions on some removable batteries.

Note on Balance Bikes

Balance bikes are shipped unassembled, allowing you to enjoy the building experience and retain the original packaging-perfect for gifting.

Details

The DMR Sect Dirt Jump Bike delivers proven dirt geometry, durable 4130 chromoly tubing, and dialled components for strength, control, and smooth handling. Its short rear end, stable 69º head angle, and tapered head tube ensure precise performance across jumps and spins, backed by components built to last.

Key Features and Benefits:

  • 4130 chromoly frame with tapered head tube: Combines high strength and low weight for a strong yet responsive build. The tapered head tube supports modern fork upgrades, ensuring long-term reliability.
  • Super short rear end: Improves bike rotation during spins and flips. This gives the rider quicker handling and tighter control over tricks.
  • 69º head angle: Provides stability without reducing agility. Riders gain confidence on steep take-offs and landings with precise steering.
  • Hydroformed chainstays with integrated yoke: Maximises tyre clearance and stiffness. The result is smoother power transfer and reduced flex under load.
  • Tektro M275 hydraulic brakes: Reliable stopping with 160mm rotors. Strong braking helps control speed on approach and landing.
  • RST Dirt fork with rebound adjustment and chromoly steerer: Built for impact strength with adjustable damping. Riders get consistent performance and a fork that matches their riding style.
  • Two-piece forged crankset with integrated axle: Adds stiffness and reduces weight. Pedalling feels efficient with less flex and improved durability.
  • DMR finishing kit with V6 pedals, Sect grips, DJ seat, and Moto DJ tyres: Purpose-built components enhance grip, comfort, and control. Every contact point is tuned for dirt jump riding.

Built for strength and control, the Sect gives riders confidence in both frame and parts. Each detail supports reliable trick execution and consistent performance, whether in practice or competition. The combination of geometry, materials, and components makes it a benchmark in dirt jump bike design.

Take advantage of proven DMR design and ride with a bike ready for progression. The Sect offers value, strength, and technical detail that meet the demands of serious dirt riding.

Specification


FrameDMR 4130 Chromoly w/ Tapered Headtube
ForkRST Dirt 100 w/ Rebound Adjustment
HeadsetFSA No42
Handlebars31.8mm Aluminium 740mm 2" Rise
StemDMR 3D Forged 40mm
Seat/SeatpostDMR DJ
BrakesTektro M275 Hydraulic 160mm Front and Rear
Crankset170mm 30t BCD76 Crank Arms w/ Integrated 24mm Axle
WheelsAlex DM24 26" double wall Rims on KT DJ Hubs
TyresDMR Moto DJ 26x2.2"
Chainring30t
FreewheelOdyssey 13t
ChainYBN MK918 Half Link Chain
PedalsDMR V6
GripsDMR Sect
Weight13.5kg

Colour Jade

BrandDMR
MPN(s)DMR-BIKE-SECT26-JD

Customer Reviews

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Finance

Our Payment Options

Maestro Mastercard Visa PayPal V12 Retail Finance Clearpay

Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.

Finance Options

In order to get the kit you want, when you need it, we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.

D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance, Klarna and Clearpay. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Klarna is unregulated credit. Clearpay is unregulated credit, use responsibly, T&Cs & late fees apply.

Our Finance Providers

Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £49.99 from £1.33 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)
Standard Delivery for orders over £49.99 Free
Bike Delivery Free 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays)
Express Delivery from £1.68 1-2 working days from day of despatch(Excludes weekends and Bank Holidays)
Special Delivery from £12.54 For any next working day delivery order before 4.30pm Monday to Thursday.
For any weekend delivery order before 4.30pm Friday

* Bike Delivery Info

A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.