Pre-orders Open for Curve Kevin of Steel 4 – BIKEPACKING.com

After a short hiatus, the Curve Kevin of Steel is back with increased tire clearance, updated geometry, and even more size options. Take a closer look at the new Curve Kevin of Steel 4 here…

As Curve puts it, the Kevin of Steel is “a reliable, versatile, heat-treated chromoly steel gravel bike built for real adventures, long rides, rough roads, bikepacking, commuting, and whatever else you define as gravel this week.” Lucas tested the original version a few years ago and praised its versatility and useful cargo fork. The Kevin of Steel hasn’t been available for a minute, but we’re excited to hear that Curve is bringing it back.

The new Curve Kevin of Steel 4 keeps the same spirit as the previous version but has been updated to follow the geometry of the GXR4. According to Curve, that means more tire clearance (29 x 2.2” out back and 29 x 2.4″ up front), improved handling, and a higher front end on the larger sizes. It’s available in seven frame sizes (XXS to XXL), the seat tube now has a dropper post port, and it uses a single-sided yoke to reduce weight while retaining stiffness through the bottom bracket area.

Curve Kevin of Steel 4 Geometry

Size
XXS
XS
SM
MD
LG
XL
XXL

Effective Top Tube
528
539
552
562
572
587
602

Seat Tube Length
450
480
510
540
555
570
585

Seat Tube Angle
73°
73°
73°
73°
73°
73°
73°

Head Tube Angle
70.6°
70.6°
71.1°
71.1°
71.6°
71.6°
71.6°

Chain Stay
436
436
436
439
439
442
442

BB Drop
72
70
70
70
68
68
68

BB Height
290
292
292
292
294
294
294

Wheelbase
1013
1026
1034
1048
1054
1073
1089

Head Tube Length
105
120
135
150
170
190
220

Reach
360
368
376
382
386
395
402

Stack
547
559
575
589
608
627
656

Front Center
587
599
608
618
624
640
656

Standover
739
764
788
812
830
846
866

Fork Length
415
415
415
415
415
415
415

Fork Offset
52
52
52
52
52
52
52

Trail
72
72
69
69
66
66
66

Geometry shown with 52mm offset fork position

The Kevin of Steel 4 has more mounts than ever before, including rear rack mounts, fender mounts, top tube mounts, and five bottle mounts, including the offset down tube mounts popularized on the GMX+. The offset and underside down tube mounts let riders run three bottles while still using a full-size frame bag, even on smaller frame sizes. It’s paired with Curve’s Ride 415 VGM fork, which has extra-strong three-pack mounts that can carry up to 17 pounds (8 kilograms) per fork leg. The Kevin of Steel 4 now uses a SRAM UDH rear dropout and maintains external cable routing for easier maintenance.

The Kevin of Steel 4 is available for pre-order today and requires a 50% deposit, with the rest due on arrival. Framesets are scheduled to arrive in early 2027 and include the Kevin of Steel 4 frame, Ride 415 VGM Fork, axles, hanger, headset, cable guides, and a seatpost clamp. To pre-order, email sales@curvecycling.com. Curve doesn’t specify the price online, but the previous version cost $2,399 AUD (~$1,600 USD), so we expect it to be somewhere around that price.

Learn more at CurveCycling.com.

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