Curtis XR650

Our 160mm travel dirt bike designed for Enduro Trail and All Mountain.

The XR650 is our 160m travel single pivot dirt bike for 27.5” wheels with geometry that allows the rider to climb with ease rail corners and go down hill fast this bike really does shred.

Winner of ‘best full suspension bike’ by Singletrack Magazine and voted one of the ‘top 5 stunning custom bikes’ by BikeRadar at Bespoked UK Handmade Bicycle Show, 2017.

The material we chose for this frame and swinging arm is Aerospace grade T45, apart from the seat tube which is Reynolds 631. We know, love and trust T45 tubing and have used it since the 1980 – it has been at the heart of all our a national title wining dirt bikes in 4X and BMX.

Customise your XR650

  1. Fork travel 160 or 170mm
  2. Head tube length and angle
  3. Seat tube length and angle
  4. Reach
  5. Personalised frame number up to six letters or numbers.

Available as frame only, frame and shock or complete bike.


Frame only, no shock
Standard paint: £1,995
Candy red or blue: £2,050
Polished & clear coat: £2,150

Frame and Fox DHX2 shock (with SLS coil)
Standard paint: £2,835
Candy red or blue: £2,890
Polished & clear coat: £2,990
(For Float X2 air shock minus £150)

Complete bike
Standard paint: £6,455
Candy red or blue: £6,510
Polished & smoked clear coat: £6,610

Complete build spec list

We have carefully cherry picked top end parts which we consider to be the best parts for the job.

Forks: Fox 38 float factory grip2 @170mm travel
Seat post: Fox transfer factory dropper 31.6mm (with under bar remote lever)
Shock: Fox DHX2 with SLS coil / Float X2 air

Wheels: Hope Fortus 30 27.5” boost front and rear
Brakes: Hope Tech 3 Enduro
Brakes: Hope floating rotor 180mm rear and 203mm front
Headset: Hope 1 1/8’ top 1.5” bottom
Pedals: Hope F20 pedals (when pedals are required)

Bars: Renthal fat bar lite carbon with 30mm rise x 800mm
Stem: Renthal Apex 40mm
Grips: ODI lockon
Saddle: SDG Bel Air Lux alloy

Rear Mech: Shimano XTR SGS long cage 12 speed
Shifter: Shimano XTR M9100 12 speed
Cranks: Shimano XT @170mm
Chainring: Shimano XT thick thin 34tooth
Cassette: Shimano XT 11-51
Bottom bracket: XT 73mm
Chain: KMC 12 speed gold

Front tyre: Schwalbe Magic Mary27.5″ X 2.4”
Rear tyre: Schwalbe Magic Mary or Hans Dampf 27.5 x 2.4”

For full XTR drive train: + £360
For Hope F20 pedals: + £115
For float X2 shock: – £150
For Fox 36 factory forks @ 160 travel: – £150


Here is a list of the RAL colours we offer, custom colours are also available.

  • Grey: 7015
  • Brown: 8001
  • Blue(s): 5024, 5002, 5015
  • Green(s): 6018, 6009,6019
  • Red(s):  3003, 3001, 3013
  • Purple: 4004
  • Yellow: 1007

View them on the Ral colour chart.

Our hand polished finish takes many hours to achieve. It is finished with a ‘smoked’ clear powder coat, this finish costs an additional £150.

Sizes & Geometry

H/T ANGLE646464646464
S/T ANGLE767676767676
B/B DROP-14-14-14-14-14-14
B/B HEIGHT340340340340340340

Shock length: 216x63mm @160mm travel.
Seat tube: 31.6mm
Head tube: Top ZS44/28.6 Bottom EC44/40
Bottom bracket: 73mm threaded
Frame weight: 18” frame with no shock 7.23 lbs / 3.86kg
Complete bike weight: 32.04 lbs / 14.53kg

Please ring for details.