Info you will need to build your La Cabra frame
| Headtube | 34mm I.D. |
| Headset | EC34 w/ 30.0 crown race |
| Fork | Straight 1 1/8″ steerer, 350mm long |
| Bottom Bracket | BSA threaded, 73mm width |
| Crankset Compatibility | Non-boost 1x is ideal up to 34t. Anything wider, like Boost, is compatible. 2x mountain in boost and non-boost is compatible up to 38t large. Road/all-road/gravel cranks are not compatible. |
| Front Derailleur | 34.9mm, Shimano side-swing is optimal for 2x. If running a 2x with 29″ tire, it’s especially important to use a side-swing derailleur or one with minimal linkage width. Use a low-clamp mount. |
| Wheel/Tire Size | Max tire size 27.5″ x 2.8″ or 29″ x 2.3″ |
| Seatpost | 30.9mm |
| Seat Clamp | 34.9mm (included) |
| Dropper Compatibility | Internally routed housing, optimized for 100mm – 120mm travel based on correct frame size |
| Brake Compatibility | IS mounts front and rear. Use post mount calipers with IS to Post mount adapters. +20 adapters front and rear to use 180mm front / 160mm rear rotor. If you have Flat mount calipers, this adapter is what you will need. |
| Rotor | Front min/max = 160/180. Rear min/max = 140/180 |
| Hub Spacing | Boost 110mm x 15mm front, 148mm x 12mm rear |
| Front Thru Axle | 15mm x 1.5mm thread pitch, overall length 130mm, included w/ frame. Compatible after-market axle is Robert Axle Project LIG 527 – request 5mm spacer when ordering. Ritchey also has a compatible axle. |
| Rear Thru Axle | 12mm x 1.5mm thread pitch, overall length 175mm, included w/ frame. Compatible after-market axle is Robert Axle Project LIG 604. |
| Rack and Fender Fitment | Multiple on fork and frame, fender mounts |
| Water bottle mounts | Three on 15″, 16″, 18″; four on 20″ and 22″. Triple “anything” cage mounts on both fork legs and on bottom side of down tube. |
| Fenders | Yes. Maximum fender/tire width for 29″ wheels – approximately 60mm/2.0″. Maximum fender/tire width for 27.5″ wheels – approximately 60mm/2.2″ |
| Frame Saver? | All frames are coated inside and out with a corrosion resistant black electrophoretic deposition (BED) coating. A frame saver spray isn’t necessary, but if you are going to ride in a wet area, a shot of Frame Saver™ or Boeshield® couldn’t hurt, especially in the lower part of the frame were moisture could collect. |
| Frame/Fork Weight | 18″ frame with all the bolts, seat clamp, and thru-axle – 5lbs. 11oz. Fork with all the bolts and thru-axle – 3lbs. 7oz. Add or subtract a few ounces for each smaller or larger size. |
| La Cabra | 16″ | 17″ | 18″ | 20″ | 22″ |
| Seat Tube (c-t) | 405 | 432 | 460 | 508 | 560 |
| Head Angle | 70° | 70° | 70.5° | 70.5° | 70.5° |
| Seat Angle | 74° | 73.5° | 73° | 72.5° | 72.5° |
| Top Tube (effective) | 545 | 560 | 580 | 600 | 620 |
| Chain Stay | 444 | 444 | 444 | 444 | 444 |
| BB Drop | 70 | 70 | 70 | 70 | 70 |
| Head Tube Length | 125 | 150 | 175 | 205 | 230 |
| Fork Length | 425 | 425 | 425 | 425 | 425 |
| Fork Offset | 55 | 55 | 50 | 50 | 50 |
| Trail | 72 | 72 | 74 | 74 | 74 |
| Stack | 581 | 604 | 632 | 660 | 684 |
| Reach | 376 | 378 | 385 | 390 | 403 |
| Standover* | 748 | 773 | 799 | 836 | 872 |
| Front Center | 624 | 635 | 641 | 656 | 677 |
| Wheelbase | 1059 | 1070 | 1075 | 1091 | 1112 |
| *Based on 27.5″ x 2.6″ tire | |||||
| BB height with 27.5″ x 2.6″ tire = 11.4″ | |||||
| BB height with 29″ x 2.3″ tire = 12″ | |||||
Size / Fit Recommendations
For more sizing info check out the Sizing page.
| Frame Size | Minimum Seat Height | Maximum Seat Height | Rider Height Range |
| 16” | 62cm | 69cm | 5’0” – 5’5” |
| 17” | 64cm | 71cm | 5’4” – 5’8” |
| 18” | 68cm | 77cm | 5’7” – 5’11” |
| 20” | 75cm | 82cm | 5’10” – 6’2” |
| 22” | 78cm | 87cm | 6’1” + |
The intended use of the La Cabra is a comfortable off-road, rambler that will enable the rider to tackle day or multi-day trips with confidence. While it is designed around large volume 29” or 27.5” tires, the large tires’ main intention is to offer the rider a level of pneumatic comfort while riding off-road, not to encourage downhill racing, riding over drops, or hitting jumps. Doing so invalidates the warranty. Black Mountain Cycles encourages you to take your La Cabra on off-road adventures, dirt road touring, and having fun in the back-country or in the hills behind your house.
