{"product_id":"mondraker-summum-r-2027","title":"Summum R MX 2027","description":"\u003cp\u003eThe Summum has been Mondraker's downhill weapon for well over a decade, and the 2027 R build keeps the formula honest: a hydroformed 6061 alloy frame, 200mm of travel at both ends, and a mixed-wheel layout that has become the default at World Cup level. It's the accessible way into the platform, and it gives up very little to the bikes above it where it counts.\u003c\/p\u003e\n\u003cp\u003eThe MX chassis runs a 29\" wheel up front and a 27.5\" at the rear. That's the setup most racers have settled on - the bigger front wheel rolls over square edges and holds a line through braking bumps, while the smaller rear stops the bike feeling long and lets you move it around in tight turns. Behind it sits the updated Zero Suspension System, using an alloy upper link with shock eyelet bearings to keep the rear end tracking under heavy braking.\u003c\/p\u003e\n\u003cp\u003eSuspension is RockShox throughout: a Vivid Coil Select+ shock at 225x75mm with a coil spring matched to frame size (450 lbs on M, 500 lbs on L, 550 lbs on XL), paired with a Boxxer Select RC 29 fork running 200mm of DebonAir+ travel. Braking is SRAM Maven Base with a 220mm rotor up front and 200mm at the rear, which matters when you're dragging the brakes for two solid minutes.\u003c\/p\u003e\n\u003cp\u003eA geometry kit comes in the box: +\/- 5mm headset reach cups, a lower shock mount flip chip, and +5mm \/ -5mm dropouts. That gives you a real range of reach, bottom bracket height and chainstay length to suit the track rather than one fixed setting. The drivetrain is a 7-speed SRAM GX DH with an e*thirteen LG1+ chain device, and the wheels are DT Swiss F 1900 Classic rims on 370 hubs.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSummum MX 6061 Stealth Alloy Evo frame with 200mm of rear travel\u003c\/li\u003e\n\u003cli\u003eMixed wheel setup - 29\" front, 27.5\" rear\u003c\/li\u003e\n\u003cli\u003eUpdated Zero Suspension System with alloy upper link and shock eyelet bearings\u003c\/li\u003e\n\u003cli\u003eRockShox Vivid Coil Select+ shock, 225x75mm, size-specific spring rates\u003c\/li\u003e\n\u003cli\u003eRockShox Boxxer Select RC 29 fork, 200mm DebonAir+\u003c\/li\u003e\n\u003cli\u003eSRAM Maven Base four-piston brakes, 220mm front and 200mm rear rotors\u003c\/li\u003e\n\u003cli\u003eGeometry kit included - +\/- 5mm headset cups, lower shock mount flip chip, +5mm and -5mm dropouts\u003c\/li\u003e\n\u003cli\u003eOnoff DH ARS adjustable-reach headset and S9 DH 45-50mm adjustable stem\u003c\/li\u003e\n\u003cli\u003eSRAM GX DH 7-speed drivetrain with e*thirteen LG1+ chain device\u003c\/li\u003e\n\u003cli\u003e12x157mm rear axle, UDH hanger, ISCG 05 tabs and 83mm BSA bottom bracket\u003c\/li\u003e\n\u003cli\u003eThree sizes - M, L and XL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications::Summum R MX\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eDiscipline: Downhill\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eMaterial: Alloy\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eFront Travel: 200mm\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eRear Travel: 200mm\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eWheel Size: Mullet (29\" front, 27.5\" rear)\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFrame - \u003c\/strong\u003eSummum MX 6061 Stealth Alloy Evo, Mullet, hydroformed tubing, Updated Zero Suspension System, 200mm travel, Forward Geometry, alloy upper link with shock eyelet bearings, 12x157mm rear axle, UDH, 83mm BSA bottom bracket, MAX. capacity dual row bearings, HHG internal cable routing, ISCG 05\u003cbr\u003e\n\u003cstrong\u003eRear Shock - \u003c\/strong\u003eRockShox Vivid Coil Select+, 225x75mm, spring preload. Trunnion top mount, 30x8mm bottom bushings\u003cbr\u003e\n\u003cstrong\u003eShock Settings - \u003c\/strong\u003eR55, C40. Spring rate: M size 450 lbs, L size 500 lbs, XL size 550 lbs\u003cbr\u003e\n\u003cstrong\u003eFork - \u003c\/strong\u003eRockShox Boxxer Select RC 29, 200mm, DebonAir+, 1-1\/8\" steerer tube, Boost 20x110mm axle, offset 52mm. Settings: low-speed compression, rebound, air preload\u003cbr\u003e\n\u003cstrong\u003eHeadset - \u003c\/strong\u003eOnoff DH ARS (Adjustable Reach System) 1-1\/8\", 1-1\/8\" steerer tube, 42x30x7x45°x45° sealed bearings, reach kit cups (+\/- 5mm)\u003cbr\u003e\n\u003cstrong\u003eStem - \u003c\/strong\u003eOnoff S9 DH CNC Integrated, 45-50mm adjustable length, 10mm rise, 31.8mm barbore, 7075 alloy, 4x5mm spacer\u003cbr\u003e\n\u003cstrong\u003eHandlebar - \u003c\/strong\u003eOnoff S6 1.5 7050 alloy, rise: 35mm, width: 800mm, 8° backsweep, 5° upsweep, 31.8mm barbore\u003cbr\u003e\n\u003cstrong\u003eGrips - \u003c\/strong\u003eOnoff Desert Pro, CNC lock-on, 135mm. L and XL: thicker size\u003cbr\u003e\n\u003cstrong\u003eSeatpost - \u003c\/strong\u003eOnoff S3 DH Alloy, diameter 31.6mm, length 300mm\u003cbr\u003e\n\u003cstrong\u003eSaddle - \u003c\/strong\u003eErgon SM10 DH Black\u003cbr\u003e\n\u003cstrong\u003eFront Brake - \u003c\/strong\u003eSRAM Maven Base, 18mm 4-piston caliper, Centerline 220mm IS 6 bolts one-piece rotor, steel-backed organic pads\u003cbr\u003e\n\u003cstrong\u003eRear Brake - \u003c\/strong\u003eSRAM Maven Base, 18mm 4-piston caliper, Centerline 200mm IS 6 bolts one-piece rotor, steel-backed organic pads\u003cbr\u003e\n\u003cstrong\u003eBrake Lever - \u003c\/strong\u003eSRAM Maven Base, Directlink and lever pivot bushings, tools-free reach adjust\u003cbr\u003e\n\u003cstrong\u003eRims - \u003c\/strong\u003eDT Swiss F 1900 Classic, 30mm internal width, welded aluminium, tubeless ready, 28 spokes front, 32 spokes rear\u003cbr\u003e\n\u003cstrong\u003eSpokes - \u003c\/strong\u003eDT J-bend spokes, DT Competition, black\u003cbr\u003e\n\u003cstrong\u003eFront Hub - \u003c\/strong\u003eDT Swiss 370, Boost 20x110mm, IS 6 bolts\u003cbr\u003e\n\u003cstrong\u003eRear Hub - \u003c\/strong\u003eDT Swiss 370 Classic with 18T Ratchet LN System, 12x157mm, IS 6 bolts, HG freehub\u003cbr\u003e\n\u003cstrong\u003eFront Tyre - \u003c\/strong\u003eMaxxis Assegai 29x2.5WT, tubeless ready, 3C Maxx Grip compound, DH casing, 60x2TPI, folding bead\u003cbr\u003e\n\u003cstrong\u003eRear Tyre - \u003c\/strong\u003eMaxxis Minion DHR II 27.5x2.5WT, tubeless ready, 3C Maxx Terra compound, DH casing, 60x2TPI, folding bead\u003cbr\u003e\n\u003cstrong\u003eCrankset - \u003c\/strong\u003eSRAM Truvativ Descendant DH, DUB axle, direct mount chainring, 165mm, chainline 56.5mm\u003cbr\u003e\n\u003cstrong\u003eChainring - \u003c\/strong\u003e36T, aluminium, X-SYNC\u003cbr\u003e\n\u003cstrong\u003eBottom Bracket - \u003c\/strong\u003eSRAM DUB BSA, sealed bearings, 83mm\u003cbr\u003e\n\u003cstrong\u003eChain - \u003c\/strong\u003eSRAM PC1110 11s, PowerLock\u003cbr\u003e\n\u003cstrong\u003eChain Device - \u003c\/strong\u003ee*thirteen LG1+ Compact upper slider, alloy backplate, DMB (direct mount bashguard) lower slider 36-38T, ISCG 05 adjustable upper slider\u003cbr\u003e\n\u003cstrong\u003eRear Derailleur - \u003c\/strong\u003eSRAM GX DH, 7s, medium cage\u003cbr\u003e\n\u003cstrong\u003eShifter - \u003c\/strong\u003eSRAM trigger GX DH 7s, X-Actuation 1:1\u003cbr\u003e\n\u003cstrong\u003eCassette - \u003c\/strong\u003eSRAM PG 720 11-25T, 7s\u003cbr\u003e\n\u003cstrong\u003eDerailleur Hanger - \u003c\/strong\u003eSRAM UDH\u003cbr\u003e\n\u003cstrong\u003eExtras - \u003c\/strong\u003eGeometry kit included: +\/- 5mm headset cups, lower shock mount flip chip, +5mm dropout, -5mm dropout\u003cbr\u003e\u003c\/p\u003e","brand":"Mondraker","offers":[{"title":"Quasar Blue \/ M","offer_id":58543929000310,"sku":"010.27054","price":4999.0,"currency_code":"GBP","in_stock":false},{"title":"Quasar Blue \/ L","offer_id":58543929033078,"sku":"010.27055","price":4999.0,"currency_code":"GBP","in_stock":false},{"title":"Quasar Blue \/ XL","offer_id":58543929065846,"sku":"010.27056","price":4999.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/3065\/6691\/files\/summum-r-mx-2027-quasar-blue-m-1255881314.jpg?v=1787762482","url":"https:\/\/www.biketart.com\/products\/mondraker-summum-r-2027","provider":"Biketart","version":"1.0","type":"link"}