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    Flat Harry's Cyclery
    31 High Street, Cookham, Maidenhead, SL6 9SJ. View the map
  • Who are we?

    A bit about us

    Flat Harry's mission is to be the best local bike shop in the Thames Valley area, our customer base is broad, attracting cyclists from all the towns and villages around Cookham; in a radius around us that passes through Lane End, High Wycombe and Beaconsfield, onto the Chalfonts, Gerrards Cross, Uxbridge, Windsor and Eton, through Taplow, Maidenhead, Bray and Holyport, and over to Marlow and Henley, our customers are happy to travel to find us, knowing we cater for every and any cyclist. We're mad about cycling and love it when anyone shares our enthusiasm, be they an aspiring fan of the sport, a tech hungry hard rider spinning their best speed machine, a thrill hungry mud lover, a hardened commuter battling the traffic, or a leisurely rider on a modest budget looking to have fun and relax on their bike.

    Whether it's serving coffee and flapjack on the mid-ride break, fixing your tusty steed, performing a bike-fitting or providing you with the right gear for your ride, we do it all and a lot more at Flat Harry's. We are proudly independent and thus only stock parts and brands that we are passionately proud of, and believe are the most suited for cyclists coping with the flint strewn roads and trails in our area.

    Our obsessive temperament, collective knowledge, engineering expertise, focus on quality and debunking of fads are what distinguish our shop, and make our customers return time and time again. Building trusting long term relationships with our customers is really important to us. Simply put, we want to be the place you trust above all others to do the right thing for you. Some folk might try and take advantage of our good nature, but we believe what goes around comes around and we want you to value our approach.

    Read more about us...
  • Key Information!

  • 2018 Whyte S-150 S Blue

    A versatile all-rounder equally capable of pushing a pace on hardcore cross-country routes to running rough Enduro rides ragged, thanks to its ability to take 29er and 27.5x2.8 wheelsets for no limits exploration. 


    Customer Rewards

    Buy now, get an extra £85.50 off your next purchase with Customer Rewards

    2018 Whyte S-150 S Blue Video


    With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

    You Pre-Order is prioritised (at no additional charge); meaning that, as soon as the product arrives with us, we can wrap it straight back up and get it sent out to you - it often never even hits the stock room shelves!


    With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

    So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

    Estimated Delivery Dates

    Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

    The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.

    The Current Estimated Delivery Dates for 2018 Whyte S-150 S Blue is

    2018 Whyte S-150 S Blue Description

  • Brand : Whyte
  • Season : 2018
  • Code : W18S150S
  • Weight : 0KG
  • At face value Whyte's brand new S-150's are 29er full sussers with 150mm front and rear travel. Look more closely and it becomes apparent that the S stands for “Switch” and that the S-150's can also swap to 27.5 wheels with 2.8 tyres, without any extra adjustment necessary. Peer even closer to find out that the S-150C Works was the bike that Martyn Brookes piloted to victory of the British Enduro National championships. The S-150 range is at home pretty much everywhere off-road, feeling surprisingly fast and light footed on multiple types of terrain from cross country trails to technical singletrack descents.

    Whyte are always pushing the limits of geometry to make their bikes simultaneously more stable and more responsive. Despite these aims seemingly being at odds with one another, Whyte have improved both qualities with their 2018 mountain bike geometry and the S-150 series is an excellent example of this. By pushing out the front wheel and slackening the head angle, Whyte mountain bikes are masters at eating up terrain and self-correcting for enhanced stability. Combining this relaxed front end with a low bottom bracket promotes a lowered centre of gravity for even more resolute stability and traction when pounding down tough and technical terrain. With 65.6 degree head angle and 335mm bottom bracket height the S-150 S is one of the most relaxed mountain bikes going. Whyte keep the handling super sharp and reactive by combining short stems with wide handlebars for huge leverage over the front wheel, resulting in pin-point front end steering that doesn't compromise stability. The result is a bike that goes exactly where you point it in a controlled and stable manner. The S-150 S utilises a 40/50mm stem with 760/780mm handlebars (different sizes depending on frame size) for extremely close control. Whyte also tuck the rear wheel in as much as possible for enhanced reactivity on tighter trails. The result of all these efforts is a very high level of control and a bike that is tonnes of fun to ride as it complies with your every demand without every feeling twitchy or unresponsive, allowing you to push boundaries like never before.

    The S-150 S's suspension system works in perfect harmony with Whyte's mountain bike geometry to enhance the characteristics of stability, traction and cornering control. The S-150 S's custom fork plays a big role in this. Rockshox only produce a 150mm travel 29er Revelation fork for the S-150 S and they've also reduced the fork's offset (distance between steering axis and axle). Bringing the axle closer to the steering axis increases the trail of the front tyre and increases control of the front wheel. The on-point support and dampening performance of the Revelation takes the bite out of trails even further for superior rolling and handling, as it keeps the front wheel in contact with the trail. This compliments Whyte's efforts with the front end geometry nicely and makes for for astonishing front end control at insane speeds. RockShox Deluxe RT Debonair shock plays its own role as well, with its light compression band keeping the rear engaged with the ground as much as possible for optimal traction and therefore power transfer and handling. The S-150 S also comes equipped with a RockShox Reverb stealth dropper post, so you can get that pesky saddle out the way when you need to.

    The sweet stability and control granted by the S-150 S's geometry and suspension is taken to the next level when combined with the superior rolling of 29 inch wheels. Everything comes together to allow the S-150 S to blitz along trails and up hills and down descents, without ever feeling uncontrollable. This is also in no small part thanks to the high quality Maxxis tyres used on the S-150 S that supply ludicrous amounts of traction and edge grip for razor sharp navigation between obstacles on your journeys. Already proven to be incredibly versatile and fast on 29 inch wheels, the option to equip the S-150 S with 27.5 wheels, on plus width 2.8 inch wide tyres adds yet another string to the bikes bow. The S-150 bikes do not come with 27.5 wheels as standard. Whyte offers two optional extra 27.5x2.8 wheelset packages with the S-150 series. There's a high quality alloy option for £599 and a top level carbon option for £1299. Both wheelsets come with Maxxis tyres, Whyte tyre sealant, a digitial pressure gauge and cassette tools (full contents in specification), so you can swap wheels over in a jiffy to give your S-150 bike a whole new dimension of performance.

    The actual physical size difference between the standard 29er wheelset and large volume tyres on 27.5 wheels is relatively minimal, meaning the two can be swapped without any adjustment for an efficient and simple wheel swap. The only change in geometry is the bottom bracket being lowered by 6-8mm (depending on suspension sag). Super simple wheel swap completed, the S-150 S takes on a new personality for when the trails get properly sketchy. Despite Whyte's significant efforts to make the S-150 S as agile and technically capable as possible on 29er wheels, there are some jobs that 27.5 wheels just do better. The geometry set-up of the S-150 S means that the 27.5 wheelset still rolls very efficiently, whilst the extra width of the 2.8 tyres combined with the natural manoeuvrability of a 27.5 wheelset, makes for incredible grip and tight front end handling, perfect for negotiating loose and twisty trails. Noticeably when hard one the brakes, the tyres really dig in for top notch control. The option for a second 27.5 wheelset with a dead simple wheel swap, takes the versatility of the S-150 series to another level, with both wheelsets offering blistering performance and defined ride characteristics for different types of terrain.

    Any top level bike is not complete without a top level groupset and that's why all of the S-150 series was specifically designed around SRAM's single chainring (SCR) Eagle 12 spd groupsets. Whyte are a significant driving force in the SCR trend, helping to pioneer it alongside SRAM a few years ago. Developing frames specifically for SCR, chainstays can be designed symmetrically, making them both stronger and lighter than chainstays that are compromised by having to accommodate a front mech. The removal of the front mech and extra chainrings from the right side of the bike improves weight distribution and lowers the bikes overall weight. The rear pivot span is also increased benefiting stiffness and power transfer. It makes riding less complex and means there is less to break. The S-150 S uses SRAM's newest GX Eagle groupset with their Level TL disc brakes. Pairing a 32 tooth chainring with a, 12 cog 10-50 cassette, the S-150 S has a massive range of gears for all the different gradients and surfaces that you'll be covering. A bike of top calibre in every area, the S-150 S gives you a license to explore everywhere and to really test your limits if that's what you want to do. 

    Buyers Guide

    Sizing Information

    Technical Information


    Matt Blue with Orange/Denim/Sky


    6061 T6 SCR Aluminium Front Triangle with Tapered Head Tube and Intergrip integrated seat clamp system, ISCG 5 Tabs, alloy symmetrical SCR rear Triangle, 148mm Boost dropouts


    RockShox Revelation RC 29", 150mm Travel, Fast Black Coating, Tapered Steerer, 110mm X 15mm Boost, Maxle Ultimate

    Rear Shock

    RockShox Deluxe RT Debonair, Fast Black Coating, Adjustable Rebound and 2 Position Compression


    FSA No. 57E Orbit ZS, 1.5" Cartridge Sealed Lower Bearing and 1 1/8" Upper Bearing

    Rear Hub

    Alloy, Double Sealed Cartridge Bearing Hub, 12mm X 148mm Boost Through Axle, 32 Hole

    Front Hub

    Alloy, Double Sealed Cartridge Bearing, 15mm X 110mm Boost Through Axle, 32 Hole


    WTB 2.0mm, Black Sandvik Stainless Steel Spokes, Brass Nipples


    WTB STp i29 Rims with TCS System, Pinned Joint, Tubeless Ready


    Maxxis High Roller II TR, 29" X 2.3" 60TPI 3C(Maxx Terra) Folding Bead, EXO Sidewall Protection Front, Maxxis Crossmark II TR, 29" X 2.25" 60TPI Dual TLR, Folding Bead, EXO Sidewall Protection Rear

    Shift Levers

    SRAM GX Eagle MMX Clamp, 12 Speed

    Front Mech


    Rear Mech

    SRAM GX Eagle, 12 Speed


    SRAM PG-1275 Eagle, 10-50, 12 Speed


    SRAM GX Eagle, 12 Speed


    SRAM GX Eagle, X-SYNC 2 Direct Mount 32T, Boost 12 Speed

    Bottom Bracket

    SRAM GXP XR, BSA 73mm


    RockShox Reverb Stealth 125mm on S, 150mm on M & L, 170mm on XL, 30.9mm, MMX


    Whyte Custom Dual Density, Triple Panel Design


    Whyte Custom Alloy 6061, 15mm Rise, 760mm Wide (30mm Rise, 780mm Wide on the XL)


    Whyte Gravity Stem, 40mm S&M, 50mm L&XL


    Whyte Lock-on V Grip

    Front Brakes

    SRAM Level TL, 180mm Rotor (200mm on the XL)

    Rear Brakes

    SRAM Level TL, 170mm Rotor (180mm on the XL), Internal Routing

    Brake Levers

    SRAM Level TL, MMX Matchmaker








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