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Specialized Tarmac SL6 Rim Ultralight 2018 49cm (XS). Initial Purchase Price: $3500
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StockSwap to 2x12 Speed Di2 Shimano R9250 RimAfter SellingTotal
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CLAIMED BIKE TOTAL6396.05 ← InputESTIMATED TOTAL SAVED721.27N/AN/A
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Pedals248.7ESTIMATED NEW BIKE WEIGHT
(Complete w pedals)
5923.48N/AN/A
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Total6644.75 Total Extra Cost$4,639.55$1,942.92$5,442.92
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PARTSTOCK PartStock Weight (g)Upgrade PartUpgrade Weight (g)Weight saved (g)PRICE (USD)COST / g
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Frame, Fork, etcFrame, Fork, cablingNone: each part weighted and or swapped listed in following rows
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PedalsShimano Dura Ace PD-9000248.7Xpedo Sonik 180.92g
Ultegra with Ti spindle 205.77g
Favero Assioma Pro RS-2 247.13g
247.131.57$0$0.00
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WheelsRoval Rapid CLX 32 Campag freehub body1,318Light bicycle AR55 rims + extralite hubs + berd spoke 553g front
Mavic CXR 60 front 820g without CX01 blade (+49.5g)
1,221.2697$1,571$16.24
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Tire: FrontSworks Turbo Cotton 26mm243Continental Aero111 29mm 275.11g
Continental GP5000 TT TR 28mm 247g
275.11-32.11$0$0.00
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Tube: Frontunknown butyl70.13TPU (est)3040.13$10$0.25
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Axel: FrontSpecialized skewer61.74View Speed Ti + custom washers to prevent clamping damage16.9244.82$42$0.93
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Tire: RearSworks (unknown) 26mm230.19Continental GP5000 TT TR 28mm (247g)
Continental GP5000 S TR 30mm (291.68g)
Continental GP5000 S TR 32mm (320.61g)
320.61-90.42$0$0.00
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Tube: Rearunknown butyl70.13TPU (est)3040.13$10$0.25
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Axel: RearUnknown skewer62.3View Speed Ti + custom washers to prevent clamping damage20.0842.22$42$0.99
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CranksetCampag Super Record 12 speed: 50/34 (claimed)618SRAM E1 165 + Cane Creek Preloader + 5Dev Spider + FC-R9200 52/34534.1483.86$691$8.24
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Bottom BracketCampag Ultra-Torque BB30 (claimed)
(note no bearings)
29BBinfinate ABEC-7 / DUB / 1-Piece Steel bearings88.58-59.58$200-$3.36
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Cassette: With LockringCampag Super Record 12 speed: 11-29268.56Red22 11-32 Cassette (O-rings removed) 194.1g $0
CS-R8100 11-34t 340.62g
CS-R9200 11-34t 255.18g $267.98
CS-R9200 11-30t 223g $192.95
Ztto Gen3 11-34t (first version) 162.4g $98.58 [92.78g less than Dura-Ace]
255.1813.38$267$19.95
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Cassette: LockringCampag Super Record 12 speed5.99Included above (5.28g)
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Front MechCampag Super Record 12 speed EPS v4 (claimed)132Shimano Dura-Ace 11 speed mechanical FD-R9100 69.28g $70.41
FD-R9150 104g $120 (claimed)
FD-R8150 110.91g $148.92 (claimed)
FD-R9250 96g $284.04 (claimed)
110.9121.09$135$6.41
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Front Mech: BoltIncluded above?Stock included above (3.94g)
Jockey wheel bolt & stock washer (2.68g)
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Rear MechCampag Super Record 12 speed EPS v4 (claimed)234Shimano Dura-Ace 11 speed mechanical RD-R9100 148.20g $163.90
B-link removed (11.95g)
RD-R9150 180.78g (estimated) $275
RD-R8150 244.99g $141.65
Replaced Ultegra cage (74.12g) with Dura-Ace (48.72g) $85.07

RD-RX825 293.49g $262.95
RD-R9250 198.78g (estimated) $529.55
219.5914.41$227$15.73
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Derailleur Hanger
Rear Mech: Mount Link
Improved shifting
Specialized S182600002 (standard mount)
Including 2x mounting screws
14.64Specialized S182600004 (direct mount solid) 17.95g $13.11
Wheels Manufacturing 603 17.91g $35.44
Including 2x mounting screws
Removed B-link 16.41g
17.91-3.27$35-$10.84
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Rear Mech: Mount LinkIncluded above?
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ShiftersCampag Super Record 12 speed EPS v4 (claimed)280Shimano Dura-Ace 11 speed mechanical ST-R9100 365g (claimed)
ST-R9150 230g $230 (claimed)
ST-R9250 224.48g stock $269.71
220.2959.71$270$4.52
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Shifter ClampIncluded above?Risk Ti nut & washer stock otherwise (18.45g) - stock (22.64g) = -4.19g
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Electronic Shifting: Battery & WiringDTI EPS V4 Power Unit (claimed) + foam (est)150None
BT-DN110 50g $80 (can be tuned)
BT-DN300 52.00g $60.83 (can be tuned) & bubble wrap to secure 1.17g
EW-SD300: 1600mm 12.90g, 500mm 4.20g, 950mm 7.61g, 500mm 4.20g
82.0867.92$61$0.90
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Electronic Shifting: InterfaceDTI EPS V4 Interface External (claimed) + zip ties est.35None
or EW-RS910
035$0$0.00
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BrakesCane Creek EE Brakes Direct Mount G4 (claimed),
S180700003 14g, & BEE0166 19g
189.8Dura-Ace front 137.13g (-77.10 ee front) = +60.03g
Removed S180700003 carbon bridge -4.29g
same
Considering Omega One Aero Brake for front for better aero
245.54-55.74$130-$2.33
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ChainCampag Super Record 12 speed
Fresh Wax
219.23Dura-Ace 235.55
PYC 217.02
in rotation
217.022.21$0$0.00
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Handlebar
Stem
Easton metal 40cm (289.32g)
Sworks 100mm 12° (125.19g)
414.51Handlebar: Zipp SL-70 Metal Compact 36cm (234.27g, $129.06)
Darimo Ellipse 36cm (125g, $450)
EXS Aerover 36cm (320g est., $450)
Lambda-Tuning Crosswing "40cm" (33cm@ hood clamp) (239g, $250)

Stem: Kalloy Uno 90mm 7° (97.36g, $32.65)
Darimo IX2 90mm 11° (65.87g, $400)
none if using EXS Aerover
Kalloy Uno 110mm 7° (101g est., $32.65) [for super narrow bars]
340.2474.27$283$3.81
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Handlebar: TapeUnknown fizik85.12Tesa Tape (estimated)1273.12$2$0.03
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Handlebar: End PlugsUnknown fizik6.34deda plugs (estimated)33.34$0$0.00
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Stem: SpacerForgot to measure (est)15Same for now150$0$0.00
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Stem: Headset Cone Specialized S182500002 20mm17.96Same for now17.960$0$0.00
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ExpanderSpecialized Stock (estimated)28CARBON-TI Expander X-Plug | 1 1/8"13.9814.02$21$1.50
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Top CapSworks metal6.44Same
CARBON-TI Ahead Cap X-Cap Carbon (3.34g, $17)
or EXS Aerover (5.34g, $0)
6.440$0$0.00
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Top Cap: BoltStock8.1Same
CARBON-TI Aluminum Screw X-Cap TORX M6x35 2.4g $3
8.10$0$0.00
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Headset: BearingsSpecialized S092500002 & S18060000239.67same39.670$0$0.00
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SaddleBontrager Montrose Elite227.15Berk Lupina Matte UD 77.56g est $283.47
Specialized S-Works Romin Evo Mirror 143mm 191.05g $338.92
77.56149.59$283$1.89
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Seat PostSL6 Pave Seatpost
+Clamping mechanism for carbon rails
167.27Same
or Darimo T1 loop
93.2274.05$339$4.58
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Seat Post: Bolt CoverSpecialized S1849000011.32Same
Removed
01.32$0$0.00
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Seat Clamp & WedgeSpecialized S184900002 (Seems like mine came with a Ti bolt instead of steel)20.04Same20.040$0$0.00
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Frame: Shift Small PartsSL6 Electronic Shifting Frame Parts:
Specialized S186500003 & S189900021
Specialized S159900006 not used for EPS (0.37g)
6.94Removed and taped over
SL6 Mechanical Shifting Frame Parts:
Specialized S186500004, S189900022, & S199900065 = 12.09g
15.94$0$0.00
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Cage Bolts2x Sworks bolts 2x random bolts5.952x 1.2g Ti ultra-low (S-works bolts are lighter but I don't like the look)2.403.55$20$5.73
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Computer MountNone0Gub 3k mount 27.89g $14.53
Custom 3d printed mount 28.87g $0
28.87-28.87$0$0.00
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ComputerNone0Garmin Edge 130 33.19g33.19-33.19$0$0.00
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Radar MountNone0Concentric Cycling RTL515 SL6 mount 21.32g $36
3D Print Saddle Mount & Zip Ties 10.59g $0
3D Print SWAT Saddle Mount & Bolts 18.49g $0
18.49-18.49$0$0.00
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RadarNone0Garmin Varia RTL515 (Radar & Light) 71.33g
Garmin Varia RVR315 (Radar only) 50.39g
50.39-50.39$0$0.00
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Extras: TotalNone0See above130.94-130.94$0$0.00
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