Raleigh Flex 400 combination coil lock review

Poor protection

BikeRadar score0.5/5

The Flex 400 is over 6ft long, which is a bonus, and comes with a mounting bracket – all be it one that’s awkward to fit. 

It’s a simple-to-set four-digit combination, but there’s enough movement in the mechanism that we could pick it blind.

At least that took longer than the one-and-a-half seconds our bolt croppers took to sever the Flex 400 due to the narrow diameter of the cable. As a lock the 400 fails badly, as a visual deterrent it does at least have some worth. 

Warren Rossiter

Senior Technical Editor
Approaching two decades of testing bikes, Warren can be found on a daily basis riding and exploring the road and off roads of Wiltshire's Salisbury Plain in the UK. That's when he's not travelling the world to test the latest kit, components and bikes.
  • Age: 44
  • Height: 188cm / 6'2''
  • Weight: 92kg / 203lb
  • Waist: 86cm / 34in
  • Chest: 112cm / 44in
  • Discipline: Road
  • Preferred Terrain: Big, fast descents and rough surfaces like cobbles or strada bianca
  • Current Bikes: Decade Tripster ATR, Dedacciai Temarario, Cannondale Synapse, BMC Granfondo Disc Di2, Genesis Day One CX, Parlee Z Zero Custom, Storck Scenario Comp Custom, DMR Trailstar, Bianchi Pista, Cube SUV 29er e-bike
  • Dream Bike: Bianchi Oltre Disc, Bianchi Specialissima, Cannondale Slate, Buffalo Bike
  • Beer of Choice: Brew Dog Punk IPA
  • Location: Wiltshire, UK

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