X-LAB
X Lab Gt8 Grx820 Afterburner
X Lab Gt8 Grx820 Afterburner
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NZ‑Based Support – Talk to real riders who understand your needs. -
Secure Payments – Shop Pay, Google Pay, Apple Pay & major cards accepted. -
Warranty Protection – All bikes backed by manufacturer warranties. -
Easy Returns – Hassle‑free returns on unused gear.
| Model | GT8 |
| Frame | X-LAB Carbon Frame, Toray T800, UDH Compatible |
| Fork | X-LAB Carbon Fork, 100x12mm Thru-axle |
| Stem | Branta Aluminum Stem |
| Handlebar | Branta Gravel Carbon Handlebar |
| Seatpost | XDS Carbon 27.2mm Seatpost |
| Rear Derailleur | Shimano GRX RD-RX820 |
| Front Derailleur | Shimano GRX RD-RX820 |
| Shifters | Shimano GRX ST-RX610 |
| Brakes | Shimano GRX BR-RX410 |
| Cassette | Shimano CS-HG710-12, 11-36T |
| Crankset | Shimano FC-RX610-2, 46-30T |
| Bottom Bracket | T47 24mm |
| Rotors | Shimano SM-RT70, F:160mm R:160mm |
| Chain | Shimano CN-M7100 |
| Wheelset | Branta C45 GT Carbon Wheelset, Steel Spokes |
| Tires | Continental Terra Trail 700x45C |
| Saddle | Fizik Terra Argo X7 |
| Weight | 8.78KG (Size M) |
| Frame | Size | XS | S | M | L | XL | XXL |
| A | Stack (mm) | 519 | 540 | 565 | 584 | 607 | 631 |
| B | Reach (mm) | 370 | 379 | 384 | 392 | 399 | 408 |
| C | Head Tube Angle (deg) | 70 | 70 | 71 | 71 | 71 | 71 |
| D | Head Tube Length (mm) | 80 | 100 | 120 | 140 | 165 | 190 |
| E | Seat Tube Angle (deg) | 76 | 75 | 74 | 74 | 73 | 73 |
| F | Seat Tube Length (mm) | 435 | 447 | 471 | 491 | 532 | 577 |
| G | Chainstay Length (mm) | 435 | 435 | 435 | 435 | 435 | 435 |
| H | BB Drop (mm) | 80 | 80 | 80 | 80 | 80 | 80 |
| J | Wheelbase (mm) | 1020 | 1032 | 1031 | 1046 | 1061 | 1078 |
| K | Top Tube Length (mm) | 506 | 525 | 547 | 566 | 585 | 605 |
| L | Front Center (mm) | 598 | 610 | 609 | 624 | 638 | 655 |
| M | Stand-over Height (mm) | 715 | 730 | 755 | 773 | 807 | 838 |
| N | Fork Rake/Offset (mm) | 55 | 55 | 50 | 50 | 50 | 50 |
| Trail (mm) | 75 | 72 | 70 | 70 | 70 | 70 |
| Components | XS | S | M | L | XL | XXL | |
| Stem | 70 | 70 | 80 | 90 | 100 | 100 | |
| Handlebar | 370/430 | 370/430 | 390/450 | 390/450 | 410/470 | 410/470 | |
| Crankset | 165 | 165 | 170 | 170 | 172.5 | 172.5 | |
| Seat Post | 300 | 300 | 350 | 350 | 350 | 350 |
| Sizing | Size | XS | S | M | L | XL | XXL |
| Recommended Rider Height | 148 cm – 158 cm 4'10" - 5'2" |
158 cm – 168 cm 5'2" - 5'6" |
168 cm – 176 cm 5'6" - 5'9" |
176 cm – 183 cm 5'9" - 6'0" |
183 cm – 191 cm 6'0" - 6'3" |
191 cm – 202 cm 6'3" - 6'7" |
Shipping
Shipping
Click & Collect – Free
Order online & collect at our Onehunga store.
NZ Shipping Costs
- General Items: $10/item
- Bikes & Frames: $120 (North Island) / $199 (South Island)
- Large/Bulky Items: $30 (North Island) / $60 (South Island)
- Helmets: $20 (North Island) / $25 (South Island)
Rural: Extra fee applies — select “Rural Delivery” at checkout.
International Orders – Contact info@rouleurcycles.co.nz for a quote.
Bike Shipping
- Fully assembled, tuned & safety‑checked before dispatch.
- Carefully boxed (minimal reassembly required).
- Recommend mechanic check before first ride.
Timeframes
- General: 3–5 working days (+1–2 for rural)
- Bikes: 5–7 working days (up to 10 remote) + prep time for build/boxing
- Delays may occur during holidays or courier disruptions.
Tracking & Issues
- Tracking emailed once dispatched.
- Contact the courier first for delays. Need help? Email or call us.
- Report damaged/lost parcels within 3 days.
No PO Boxes – Physical addresses only.
Why Buy From Rouleur?
Why Buy From Rouleur?
Trusted NZ Bike Experts – Locally owned & operated with years of experience helping Kiwi riders get the most out of their bikes.
Custom Builds & Personal Fitting – From road to e‑bikes, we tailor every build to your riding style and goals.
Fast, Reliable Shipping – In‑store stock ships next business day. Supplier stock delivered in as little as 3–5 days.
After‑Sales Support That Rides With You – From servicing to upgrades, our workshop team is here for the long haul.