Gustav Gullholm, aka Dangerholm, has been crafting a number of the most original and light-weight bike builds for over a decade. The Swedish {custom} bike builder is understood for his one-off creations, refinishing and speccing out bikes with rigorously curated picks of a number of the lightest, most unique — and costliest — elements available on the market. Ten years after turning his first Scott Spark RC into the “world’s lightest 29” full suspension mountain bike,” Dangerholm has a brand new ultralight construct on the newest model of Scott’s XC race platform.
Over time, Dangerholm has constructed quite a few Scott Spark RC bikes, together with Third- and 4th-generation frames. However Dangerholm says the Fifth-generation Spark raises the bar for XC even increased with its suspension efficiency, geometry, and lightweight weight. So, he set out with the objective of turning the newest Spark RC body right into a sub-9kg full construct that was not solely mild, but in addition quick, enjoyable to journey, and pleasing to the attention, too.
“I began with setting 9kg / 19.84lbs as a weight objective for the whole bike. Partially as a enjoyable problem, but in addition since I personally discover that it’s round this weight and beneath that you just actually begin to discover a giant distinction and actually really feel that you just’re using a superlight bike. With the low body weight and light-weight elements obtainable as we speak, this can be a comparatively straightforward weight goal so far as tuning goes, however the actual problem lies in getting there with out compromising efficiency or sturdiness.”
-Dangerholm
Scott Spark RC Body
In keeping with Dangerholm, the newest model of the Scott Spark RC has an enormous give attention to user-friendliness, which “already comes served on a silver platter from the engineers and designers at Scott.” He says that general this bike construct was comparatively easy, with little complexity or main modifications to the body.
That stated, he took the time to strip the body right down to a custom-polished high-gloss uncooked carbon fiber end. He additionally created matching clear covers for the distinctive internally mounted rear shock placement on the Spark RC body. This even features a cutout for the Flight Attendant motor/battery pack on the RockShox SIDLUXE shock.
Suspension
On the subject of Flight Attendant, it’s spectacular to see it included on each the rear shock and the fork. The Flight Attendant’s battery and electronics add each complexity and weight, a trade-off that Dangerholm is outwardly keen to simply accept for its efficiency benefits.
Curiously, the Intend Samurai XC fork with the Flight Attendant Cartridge is sort of an identical to the claimed weight of the RockShox SID Final Flight Attendant fork at 1,624 grams. Not solely that, however the Intend fork permits for the polished silver look, which is an aesthetic/theme shared with most of the different elements on the construct.
Elements
Given his expertise placing collectively light-weight bike builds, it appears that evidently Dangerholm has a direct line to the entire most unique part producers within the enterprise. Whereas many of those are extra apparent, like wheels, brakes, cranks, and so on, it’s the little issues that present that Dangerholm goes all in on his light-weight builds.
Take, for instance, the RadoxX Elements Oknytt Dangerholm Signature topcap that weighs simply 3.2g, or the Extralite UltraStar 5 Expander, which weighs 4.6g. He additionally selected ExtraLite ExtraBolt {hardware} for the brakes and bottle cage, Oak Elements ti bolts for the ability meter, and 7g Tune valves for the wheels.
In fact, Dangerholm doesn’t fiddle in relation to the extra visually apparent elements, both. Beginning with the drivetrain, the WERT Titanium cranks are a factor of magnificence, particularly with a silver 38T Garbaruk chainring. The particular version SRAM 1987 chain and cassette add to the shiny silver theme, whereas the HOPP Carbon tuning package on the GX AXS derailleur brings its weight right down to 357.7g.
Transferring to the wheels, the PI ROPE ”Mild” SLS5 285 wheelset will not be a typical sight. With textile spokes and carbon rims, these wheels weigh in at a claimed 949.1g for the pair (plus 19g for the valves and rim tape). These are wrapped in TUFO XC11 + XC14 TR SG 29×2.35” tires. Pace management duties are tasked to a set of Trickstuff Piccola brakes with prototype titanium levers paired with Carbon-Ti X-Rotor SteelCarbon 3 rotors. It’s actually not day-after-day you see carbon fiber on MTB brake rotors.
Transferring to the cockpit, Darimo is an apparent selection for light-weight carbon handlebars and stems. The ExtraLite HyperGrips and HyperPlugs reportedly weigh simply 9.1g, and the Zirbel ZShift01 and SRAM BlipBox assist to maintain the cockpit clear and AXS Pod-free. The Vertical Helium Race 120mm dropper and Ignitor Management distant are additionally amongst, if not the lightest available on the market. Lighter nonetheless is the Berk Composites prototype saddle that weighs a scant 61.3g!
Dangerholm’s Scott Spark RC: Spec Checklist
Body: Scott Spark RC HMX-SL dimension L – 1446,6g
Fork: Intend Samurai XC 120mm with RockShox Flight Attendant cartridge – 1624,5g
Rear shock: RockShox SIDLuxe Flight Attendant – 352,7g
Headset: Syncros with CeramicSpeed SLT bearings – 106,0g
Spacers: Onyx Racing Merchandise – 3,2g
Topcap: RadoxX Elements Oknytt Dangerholm Signature – 3,2g
Expander: Extralite UltraStar 4 – 4,6g
Stem: Darimo IX2AL 80mm -12º – 76,4g (Darimo laptop mount- 3,7g)
Handlebar: Darimo MTB Flatbar 690mm 6º {custom} polished – 102,2g
Grips: Extralite HyperGrips with Extralite HyperPlugs – 9,1g
Controller: Zirbel ZShift01 with SRAM BlipBox – 62,8g
Brakes: Trickstuff Piccola with prototype titanium levers – 337,8g (Extralite ExtraBolt 4.5 + 9.1 – 19,6g )
Rotors: Carbon-Ti X-Rotor SteelCarbon 3 160+180mm – 175,3g
Rear derailleur: SRAM GX with full HOPP Carbon tuning package – 357,7g
Cassette: SRAM Eagle Transmission 1987 – 316,4g
Chain: SRAM Eagle Transmission 1987 – 250,5g
Chainring: Garbaruk MTB Thread Mount 38T – 54,8g
Powermeter: SRAM XX SL – 107,2g (Oak Elements titanium bolts – 4,5g)
Cranks: WERT StW-M 175mm titanium – 321,6g
Backside bracket: CeramicSpeed BB ALPHA – 68,2
Pedals: Xpedo M-Drive 8 Ti – 213,4g
Wheels: PI ROPE ”Mild” SLS5 285 – 949,1g (Tune valves- 7,0g, Orange Seal tim tape – 12,0g)
Tires: TUFO XC11 + XC14 TR SG 29×2,35” – 1266,0g (Milkit sealant- 196,4g)
Seat submit: Vertical Helium Race 120mm custom-made – 334,6g (Vertical Ignitor Management custom-made – 21,5g)
Saddle: Berk Composites prototype – 61,3g
Bottle cage: Syncros Tailor Cage 1.0 with Extralite ExtraBolt 12.1 screws – 24,2g
Whole weight: 8987,8g (8,99kg / 19.82lbs)
Not solely is that this Scott Spark RC a really light-weight and elegant-looking bike with an unique construct, however Dangerholm says, “The tip result’s one of the best bike I’ve ever had.”
You possibly can sustain with Gustav Gullholm and all of his {custom} bike creations on Instagram, @dangerholm.
