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BOMBTRACK
[Kyoto/In-store Pickup Only] HOOK EXT
[Kyoto/In-store Pickup Only] HOOK EXT
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Item number: SKU:4055822531511(-45240225)
■PHOTO COLLECTION
- Product Description
- Specifications
- Geometry (Size)
- Returns, Delivery & Shipping
The BOMBTRACK HOOK EXT lets you enjoy rough roads with extra-fat tires like an MTB.
This versatile bike offers the lightness of chromoly and carbon, allowing you to switch between 27.5 and 700C wheels.
BOMBTRACK HOOK EXT | An Adventure Racer with Extra-Wide Tires, Chromoly, and Carbon
Equipped with double-butted Columbus tubing and a carbon fork with 27.5×2.0” tires! A bike for exploring unknown routes.The BOMBTRACK HOOK EXT is an adventure racer that combines a lightweight double-butted Columbus chromoly frame with a full carbon fork. The carbon fork, with its tapered steerer tube for increased rigidity, offers outstanding stability on rough terrain. The 27.5×2.0” wide tires are comparable in size to MTB tires, encouraging you to tackle even the toughest paths. Of course, by swapping to 700C wheels, it can be transformed into a road or light gravel setup. Available in two colors: matte black and matte teal.
Features
- Double-butted Columbus chromoly tubing balances light weight and rigidity
- Tapered full carbon fork, including the steerer tube, enhances stability on rough roads
- 27.5×2.0” high-volume wide tires absorb road vibrations, providing excellent off-road performance
- Standard 10° flared handlebars offer comfort for both on-road and high-speed gravel riding
- Can be set up for speed by swapping to 700C wheels
- Available in two colors: matte black and matte teal
- Size range to accommodate a wide range of riders (150cm to 190cm)
SPECIFICATIONS
- Frame: Columbus Double-Butted Chromoly
- Fork: Full Carbon (Tapered Steerer)
- Tires: 27.5×2.0”
- Handlebars: Drop bars with 10° flare
- Colors: Matte Black, Matte Teal
- Size (Rider Height): XS (150-161cm), S (160-171cm), M (170-181cm), L (179-190cm)
Specification Table
| Tire size | 27.5"x2.0" | |
| Gear count | 1x11speed | |
| Pedals | None | |
| Specifications | Frame | Columbus Cromor double butted, TA, rack / fender mounts, internal light cable routing, rear light mount, 85.5 mm T47 BB shell |
| Fork | Seido MGV full carbon, TA, 1.1/2” – 1.1/8”, fender / triple cage mounts, 180 mm max rotor size, lowrider rack compatible, internal hub dynamo cable routing | |
| Crankset | Bombtrack Lyer forged aluminium crank, direct mount interface (Sram compatible), 30 mm spindle,CNC machined aluminium, narrow-wide, 40 T | |
| BB | Bombtrack T47 internal sealed BB for 30 mm spindle, 85.5 mm | |
| Front Derailleur | - | |
| Rear Derailleur | Sram Rival 1, clutch, long cage | |
| Shifters | Sram Rival 1 double tap 1 x 11 | |
| Cassette | Sram PG-1130 11-speed, 11 – 42 T | |
| Brake Levers | Sram Rival 1 double tap hydraulic | |
| Brakes | Sram Rival flat mount hydraulic disc brakes | |
| Tires | WTB Ranger TCS Light / Fast Rolling 27.5” x 2.0”, tubeless ready | |
| Wheels | Front Hub: Bombtrack Tau sealed hub, 6-bolt disc Rear Hub: Bombtrack Tau sealed hub, 11-speed, 6-bolt disc Front Rim: WTB ST Light i25 double wall, TCS 2.0, 32h |
|
| Handlebars | Bombtrack CX-10 drop bar, 31.8 mm, 10° flare | |
| Stem | Bombtrack Roam forged aluminium stem, -7° | |
| Headset | Sealed external aheadset, 1.1/2” – 1.1/8” | |
| Saddle | Bombtrack Dart saddle | |
| Seatpost | Bombtrack Yew aluminium seatpost, 27.2 mm x 300 mm | |
フレームジオメトリー

| フレームサイズ | 460(XS) | 500(S) | 530(M) | 570(L) |
| HA | 70.9 | 70.9 | 71.5 | 71.5 |
| SA | 73.9° | 73.9° | 73.5° | 73.5° |
| TT | 520 | 534 | 558 | 572 |
| HT | 110 | 130 | 150 | 170 |
| FC | 588 | 603 | 618 | 632 |
| RC | 425 | 425 | 425 | 425 |
| BB | 71 | 71 | 66 | 66 |
| FO | 53 | 53 | 53 | 53 |
| WB | 1003 | 1018 | 1034 | 1049 |
| SH | 753 | 782 | 805 | 834 |
| SK | 558 | 577 | 593 | 612 |
| RH | 360 | 369 | 381 | 390 |
| 適応身長 | 150~161cm | 160~171cm | 170~181cm | 179~190cm |
◆Returns and Exchanges
Please inspect your order as soon as possible after it arrives.
- Parts, apparel, accessories, and other cycling goods may be returned or exchanged. Return and reshipping costs are covered either by the customer or by our store, depending on the circumstances.
- Complete bicycles cannot be returned or exchanged for reasons of customer preference. We will only accept returns in the event of a product defect or damage during delivery.
▶ View our Return and Exchange Policy
◆“In-store Stock” and “Special Order” Items
- “In-store Stock” items are currently available at an Eirin store or in our warehouse. Each item will be inspected before being dispatched.
- “Special Order” items are ordered from the manufacturer or an authorized Japanese distributor. After the item arrives, we conduct a final inspection before dispatch.
※If “In-store Stock” is unavailable, please select “Special Order.” We will contact you by email once the item has arrived from the supplier.
※If the manufacturer or distributor is also out of stock, the item cannot currently be purchased. Select the “Notify me when available” button to receive a restock notification.
◆From Order to Delivery
※① If an item is out of stock, we will contact you by email and ask whether you would like to change or cancel the item.
※② Items cannot be added, changed, or cancelled after the order has been confirmed.
※③ Once your order has been dispatched, we will email you with the shipping confirmation and tracking number.
◆Shipping Carrier
Orders are generally shipped by Seino Transportation.
Another shipping carrier may be used depending on the contents of your order or the delivery area.
◆Pickup at Eirin Stores in Kyoto City
- Shipping is free when you collect your order from one of our street-front stores in Kyoto City.
- Complete bicycles generally require approximately 1-2 weeks for assembly and inspection before pickup.
- Some parts and apparel are stored in our warehouse and may require approximately 1-5 days before they are ready for pickup.
※Due to system limitations, the following payment methods are available for store pickup orders:
Shop Pay, Credit Card, Bank Transfer, and JACCS Financing
Customers wishing to use another payment method should select standard delivery instead of store pickup.
◆Pickup at a Seino Transportation Branch
※Shipping for complete bicycles is free when the bicycle is collected from an eligible Seino Transportation branch.
- This service is available only for complete bicycles. Parts, cycling goods, apparel, and accessories are not eligible.
- For purchases under ¥55,000 including tax and excluding payment fees, the shipping charge is reduced to half of the standard rate.
- Different charges apply to Hokkaido, Okinawa, and remote islands. These charges are still lower than residential delivery rates.
▶ List of Seino Transportation Branches
◆Shipping Fees
The total shipping charge for your order will be calculated automatically and displayed at checkout after you enter your delivery address.