Surly Krampus 29+ Frameset

The wild ride begins: The Krampus Frameset by Surly

The Surly Krampus frameset, the first " plus bike" of its kind, has kept up with the times: thanks to Gnot Boost Spacing you can ride the exact rear hub that fits you, whether 10 x 135 mm, 12 x 142 mm or 12 x 148 mm Boost. With its long head tube and compact chainstays, the Krampus will bring any trail to its knees. The double-butted, partially tapered tubes give it stiffness without affecting its weight. Of course you can mount an adjustable seatpost and 3" tyres - so you can have even more fun with this wild stallion.

Specifications:

Application:

Trail, Cross Country

Wheel Size:

29+

Size:

S, M, L, XL

Material:

steel (Surly 4130 CrMo)

Technical Information:

Rear Over Locknut Dimension:

142 mm, 148 mm (Gnot Boost)

Axle Type:

12 mm thru-axle

Seatpost (Ø):

30.9 mm

Seatpost Clamp(Ø):

33.1 mm

Headset:

ZS44/28.6-EC44/30

Steerer tube rec.:

1 1/8"

Fork Axle to Crown:

483 mm

Recommended Fork Travel:

120 mm

Bottom Bracket Standard:

BSA

Shell Width:

73 mm

Brake Mount:

disc IS

Front Derailleur Mount:

Direct Mount (High-Direct)

Bottle Cage Mounts:

2

Accessory Mounts:

braze-ons for racks, fenders, dropper post cable routing

Technical Information - Fork:

Steerer Tube:

1 1/8"

Axle Type:

thru-axle (15 x 110 mm)

Brake Mount:

disc IS

Offset:

47 mm

Axle to Crown:

483 mm

Over Locknut Dimension:

110 mm (Boost)

Crown Race Diameter:

30 mm

Steerer Tube Material:

steel

Blade Material:

steel

Accessory Mounts:

bottle cage mounts, braze-ons for racks & fenders

Approved For:

Weight Limit:

136 kg rider weight, 2.3 kg gear, 138 kg total weight

Rotor Size (max.):

203 mm (front), 180 mm (rear)

Tyre Size (max.):

3.0"

Chainrings:

2x, 1x

Chainring Size (max.):

2x 24-36 t Boost, 1x 30 t Boost

Fork Axle to Crown Size (max.):

483 mm (for rigid forks), 550 mm (for suspension forks)

Features:

• TIG-welded, ED-coated
• double-butted main triangle
• horizontal and vertical slotted dropouts
• cable guides for Vario supports
• ASTM Category 3

Note:

For sizes S and M, the seatstays are welded to the top tube in front of the seat tube. For sizes L and XL, they are welded directly to the seat tube. This is by design and is related to the necessary tyre clearance.

Technology:

Gnot Boost:
The Surly Gnot Boost technology allows the mounting of different over locknut dimensions on the rear wheel. Rear wheels with 12 x 142 mm or 12 x 148 mm thru-axles can be mounted by clamping or spreading the frame. Wheels with an over locknut dimension of 135 mm can be operated in frames with Gnot Boost technology using the rear wheel axle adapter.

Manufacturer's Notice:

When choosing your frame size you should take into account that Surly does not measure the seat tube specifications to the end of the seat tube. For frames with struts on the top tube, this is measured from the middle of the bottom bracket to above the struts. For frames without struts, measure from the middle of the bottom bracket to the top edge of the top tube.

Models:

S:

Recommended Height:

162 - 173 cm

Stack:

593 mm

Reach:

404 mm

Seat Tube Length:

368 mm

Top Tube Length:

556.8 mm

Effective Top Tube Length:

585 mm

Head Tube Length:

90 mm

Chainstay Length:

435 mm

Wheelbase:

1087 mm

BB Drop:

65 mm

Seat Tube Angle:

73.0°

Head Tube Angle:

69.0°

Standover Height:

770 mm

M:

Recommended Height:

170 - 183 cm

Stack:

602 mm

Reach:

426 mm

Seat Tube Length:

419 mm

Top Tube Length:

573 mm

Effective Top Tube Length:

610 mm

Head Tube Length:

100 mm

Chainstay Length:

435 mm

Wheelbase:

1113 mm

BB Drop:

65 mm

Seat Tube Angle:

73.0°

Head Tube Angle:

69.0°

Standover Height:

797 mm

L:

Recommended Height:

180 - 190 cm

Stack:

612 mm

Reach:

448 mm

Seat Tube Length:

470 mm

Top Tube Length:

595.1 mm

Effective Top Tube Length:

635 mm

Head Tube Length:

110 mm

Chainstay Length:

435 mm

Wheelbase:

1138 mm

BB Drop:

65 mm

Seat Tube Angle:

73.0°

Head Tube Angle:

69.0°

Standover Height:

825 mm

XL:

Recommended Height:

188 - 198 cm

Stack:

621 mm

Reach:

470 mm

Seat Tube Length:

521 mm

Top Tube Length:

621.8 mm

Effective Top Tube Length:

660 mm

Head Tube Length:

120 mm

Chainstay Length:

435 mm

Wheelbase:

1164 mm

BB Drop:

65 mm

Seat Tube Angle:

73.0°

Head Tube Angle:

69.0°

Standover Height:

854 mm

Contents:

• 1 x Surly Krampus frame
• 1 x Surly Krampus fork
• 1 x Surly stainless steel seatpost clamp
• 1 x Surly HU0138 front thru-axle
• 1 x Surly HU0134 rear thru-axle
• not incl. Gnot Boost rear axle adapter