Giant Trinity Build

Posted on by paschmann

This was a fun build on a Aero bike frame that a buddy gave me. Since I now had a bike, it got me into doing my first 70.3 Ironman event in 2021 (Augusta). It took a lot of searching and scouring the web, eBay and local sellers on Craigslist, but aside from a couple mistakes here and there, it turned out great. The bike is really light compared to my more modern Canyon Speedmax.

Below is a list of part numbers, references, purchases and photos I was using during the build.

To figure out what crank lengths I should by my inseam is 85cm (33.5”) & a second remeasure was roughly 33 – 33 & 1/3. Using this a general crank length formula is: 1.25 * inseam (in cm) + 65 = 171.25. Majority of cranks coming in 170cm and 172.5. So I decided on the slightly longer 172.5cm cranks.

Build Photos

Parts List

ComponentSpecsConditionCost
Frame$0
Stem$0
Fork$0
Zuka Base Bar$0
Skewers$0
SeatISM PN 2.1$100
Brake CablesShimano CablesNew$16
BrakesFront brakes are: TRP TKB841-601
Back brakes are: TRP T925 http://trpbrakes.com/pubs/T925%20C1.pdf
Brake LeversShimano BL-TT78New$25
Vuka clips$50
Vuka Riser$18
TT extensions and pads
Bottom BracketSM-BB86-41Used$30
CrankShimano Ultegra, 50/34New$140
Front DerailureShimano UltegraUsed$32
Rear DerailureShimano UltegraUsed$43
ChainKMC X10New$23
CassetteUltra CS-6700Used$35
Shifter CablesNew$10
ShiftersShimano Dura-Ace, Bar EndSL-BSR1New$100
WheelsetsReynolds Carbon Aero Tubulars$200
Tires$80
Tire Glue$12
PedalsShimano 105
Blinky
Bar TapeNew$16
Barrel AdjustersNew$17
V Brake NoodlesNew$9
Bottle CageNew$17
Shoes$90
HelmetNew$60
Tools
Cable Cutter$13
Bottom Bracket Tool$11
Credits(Items I sold that I got with buying/selling)
Dura Ace Cassette$22
Wheelset 1150
Bars$30
Clips$25
BB$15
Total~ $1205