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Re: TanTan TT-X21 frame You will need to insist with them.  And be prepared to fight.  And I hope you did not pay with Paypal "friends and family".  That is your backup if they do not agree to send you another one.  I would not waste too much time arguing with them before you tell them you have no choice but to take it up with Paypal.  At that point hopefully they will capitulate.  7mm is not ok!
July 01, 2021, 09:33:37 AM 		1
Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes? My Seraph/ TanTan TT X 68 Build - Size 54 - Matte Black

6.94kg - $2900ish all in. Weight is plus or minus 50gwith grease, and misc hardware not accounted for.
I acquired most of these parts used over the course of 4-5 months, via ebay and facebook. I learned about most of the build options, not named shimano, from this site or via youtube (GC Performance, Pat Lino, China Cycling, etc...). I also built this bike by myself, first time ever doing a frame-up build, and used GC's SL8 bike build and his other videos.

Frameset - $629 + $100 shipping. Took about 2 months to receive.
Frame w/ headset bearings, bottle cage bolts, fd mount, rd mount - 878g
Uncut Fork - 339g      Cut Fork - 309g (10mm spacer)
Uncut Seatpost w/ hardware - 166g      Seatpost Wedge - 20g
Thru Axles - 62g
Bar/ Stem 120/38 - 326g
Spacers and Covers - 15g
Garmin Mount - 28g (kinda sucks on first impression, will be looking for alternatives)
BSA30 BB - 88g
Aliexpress SL8 Direct Mount RD Hanger - 15g (saves 8g)

CRW 50/55 Wheelset - 1325g
MT900 160/140 Rotors - 187g (pair)
Aliexpress Tubeless Valves - 11g (pair)
Sunshine Cassette 11-32 - 230g
Vittoria Corsa Pro Control Cream 28 Tubeless - 633g (should be 520g for the pair according to BRR.com)
Amazon CL Rings - 23g (pair)
Stans Sealant 40ml per tire - 60g

Shimano ST-R8170 - 399g
Shimano BR-R8170 - 300g (bolts, pads, calipers)
Shimano FD-R8150 - 112g
Shimano RD-R8150 - 250g
Shimano BT-DN300 - 52g
Di2 Cables - 16g
Sram Force 170, Quarq PM, 53/39 Chainrings - 753g (old sram powerglide chainrings)
KMC X12 Gold - 243g (uncut was 273g)
Brake Hoses - 35g (approximate. I subtracted the excess)

Aliexpress Carbon Bottle Cages - 48g (pair)
Ryet 3d Ultralight 143mm - 165g
Deda Tretaforo Bar Tape - 35g (40g uncut)
R8000 Ultegra Pedals - 248g

Future Weight Weenie Options:
HY Seatpost - 130g - $167 (saves 36g)
Avian Canary - 266g - $300 approximately (saves 60g)
BDOP 11-30 Cassette - 126g - $160 (saves 104g)
Xcadey/ Lexon 53/39 - 600g - $615 (saves 153g)
J&L Axles - 47g - $40(saves 15g)
Tofu Comtura Prima 28 Tires - 480g - $120 (saves 153g over current tires)
Wheels - 1150-1200g - $800 to infinity (plenty of options here)
Saddle - 100-130g - $40 to infinity (plenty of options here)
January 19, 2025, 06:02:57 PM 		1
Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes? I finished building the TT-X68 already two weeks ago, but it was very busy, so here is my update.

Carbon quality seems really good. I had zero issues with sharp edges or anything similar. The areas for the break mounts were all sanded down really well and also with the BB and the headset I had zero play/issues. The paint quality is so far superb and I'm more than happy TanTan changed there mind on the color customization of this frame.

I use a full Ultegra DI2 Groupset incl. 160mm discs front/rear, except for the crankset. As most of you can tell, I'm using a Magene PES505 in 165mm. In combination with my Novatec R4, some RideNow TPU Tubes and the Pirelli Tires the whole bike is 7152 g. The bottle cages are still in transit, but they will add only about 25g. It's a Size 52.

For my first chinese frame experience, this was quite a good one  ;)

The only thing I do not recommend is the computer mount. I think the angle of this is too steep, but I already found an alternative.
February 10, 2025, 04:11:29 AM 		1
Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes? Just got info that my frame is finised and shipped out. I ordered/paid mine on the 16th of January. Also got some pics from the Tantan guys before they packed and shiped it out.  :)
March 12, 2025, 07:58:59 AM 		1
Re: Seraph Bikes Superlight 836g X68 - Alternative to SL8 Fakes? The real sl8 is 160 only as Specialized used a spacing on the fork mounts that's unique to it and the Aetheos, supposedly for mass reduction. It won't take a 140 mount.  Its only a problem for Campy users as the stock Campy road front caliper is native 160 (the mount is cast into the caliper) and doesn't work on an Sl8. The solution is to use a rear caliper and the stock Specialized mount w/ the 160 rotor. Ekar calipers are cheapish and identical to the road 140 other than matte finish and logo.

Normal flat mount spacing on the fork is 70mm, this fork and the actual sl8 measure 60mm
April 17, 2025, 01:39:44 PM 		1