simms fishing

Simms M4 BOA Field Repair Kit — Streamside Dial Replacement System

Field Repair Kit That Keeps You on the Water

Fix it streamside — Full replacement system for broken BOA dials on the water
Stainless steel lace — Corrosion-resistant wire lace built for salt and freshwater
Two size options — S/M fits 7–11, L/XL fits 12–14
Verified fit guide — Check tongue label for correct lace length and BOA generation
  • Free shipping -- Fully insured on every order
  • Authorized dealer warranty -- Genuine Simms factory hardware — no gray market

$34.95

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In the box

  • M4 replacement dial
  • Stainless steel wire lace
  • Lace lock
  • Flat head screw driver
Simms - M4 BOA Field Repair Kit
Simms M4 BOA Field Repair Kit — Streamside Dial Replacement System
$34.95

Field Repair Kit That Keeps You on the Water

A failed BOA dial shouldn't end your hunt. This precision-built M4 BOA Field Repair Kit includes everything you need to swap out a broken lace system streamside — replacement dial, stainless steel wire lace, lace lock, and a flat head screw driver. Designed for the Simms G3 Guide BOA in Vibram and felt, it's a rugged, trail-ready addition to any gear bag. Verify your lace length on the boot's tongue label before heading out.

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Complete Field Repair
Stainless Wire Lace
G3 Guide BOA Fit
Screwdriver Included
130 cm
S/M Lace Length
150 cm
L/XL Lace Length
4
Components Included
A blown dial doesn't end your trip

A blown dial doesn't end your trip

A failed BOA dial on day three of a steelhead trip doesn't mean driving two hours to the nearest fly shop. This precision-built M4 replacement kit gives you everything to swap the system streamside — dial, stainless wire lace, lace lock, and driver. Hunt Premium stocks this kit because we know what happens when you can't fix gear in the field: your hunt ends early, your boots walk sloppy, and that quiet frustration follows you home. We carry repair solutions that earn their spot in your pack, not shelf fillers that look good in a catalog.

Match the right kit to your boot generation

Match the right kit to your boot generation

Simms BOA boots span multiple generations and lace systems, and ordering the wrong kit means wasted time and a boot you still can't lace. This M4 kit fits G3 Guide BOA boots in both Vibram and felt soles. Before ordering, check the tongue label inside your boot — it lists both your size and the BOA generation. Earlier Guide BOA, Headwaters BOA, and second-generation RiverTek boots use the M2 kit. First-generation RiverTek boots take the M3. The G4 uses its own dedicated kit. Two lace lengths cover sizes 7 through 14, so you get the right fit the first time.

Stainless hardware that survives the river

Stainless hardware that survives the river

Stainless steel wire lace holds up to repeated submersion in saltwater, river silt, and rocky streambeds where standard laces fray and fail. The included flat head driver makes the swap straightforward on a wet riverbank with cold hands — no specialty tools required. At 130 cm for S/M and 150 cm for L/XL, the lace lengths match Simms factory specs for a clean, even tension pull across the boot. This is season-proven hardware that performs under the same conditions that destroy lesser repair kits.

Compatibility Check

Confirm your boot matches these conditions before ordering.

  • Boot is Simms G3 Guide BOA with Vibram or felt sole
  • Tongue label confirms M4 BOA Reel designation
  • S/M fits sizes 7-11; L/XL fits sizes 12-14

When You Need This Kit

Don't let a lace system failure cost you a day on the river.

Backcountry Wading Repairs
Streamside Dial Replacement
Pre-Season Gear Prep
Multi-Day Hunt Spares

Full specifications

At a glance

Dimensions
7-11
Surface
Stainless steel wire lace
Warranty
See product page
Full specifications6 data points across 4 categories

Dimensions

S/M Lace Length130 cm
L/XL Lace Length150 cm

Power & Performance

Compatible Boot Sizes (S/M)7-11
Compatible Boot Sizes (L/XL)12-14

Materials

Lace MaterialStainless steel wire lace

Compliance & Warranty

WarrantySee product page

The Hunt Premium Promise

Every product we carry earns its spot — or it doesn't make the cut.

Authorized DealerFull manufacturer warranty honored on every product. No gray market, no exceptions.
Free ShippingShips free with fully insured packaging on every order.
30-Day ReturnsReturn within 30 days in original packaging for a full refund — no questions asked.
★★★★★
“Carried this on a week-long steelhead trip in November. Day four, my buddy's BOA dial locked up completely on the river. Had his boot swapped and dialed in under five minutes with the kit. Stainless lace still looks clean after a full season of saltwater use. This stays in my boat bag from now on.”
T
Travis L.Missoula, MT

Includes M4 replacement dial, stainless steel wire lace, lace lock and flat head screw driver for easy lace system replacement in the field. For use with Simms G3 Guide BOA Vibram and felt. To verify which Lace Length you need look inside the boot on the tongue label where the size is marked. Previous Guide Boa, Headwaters BOA and RiverTek BOA Boot in Vibram® and felt order M2 BOA Field Repair Kit. For 1st generation RiverTek BOA wading boots, order M3 BOA Field Repair Kit. For the G4 BOA Boot, order the G4 BOA Replacement Kit. To verify which RiverTek BOA Boot you have, look inside the boot on the tongue label where the size is marked. 2nd Generation boots will state BOA® M2 Reel and the lace length, 1st Generation boots state only BOA® and lace length.

  • Includes BOA® M4 replacement dial, stainless steel wire lace
  • S-M lace length: 130 cm, fits boot sizes 7-11
  • L-XL lace length: 150 cm, fits boot sizes 12-14
  • For all tongue-mount and right-side side-mount M4 BOA boots, be sure to order the standard M4 BOA in the proper lace length for your size boot. For all left-side side-mount M4 BOA boots, be sure to order the left-turn M4L BOA Replacement Kit.

Additional information

Size

L/XL, S/M

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Frequently Asked Questions

This M4 BOA Field Repair Kit is designed for Simms G3 Guide BOA boots in both Vibram and felt sole configurations. It covers all tongue-mount and right-side side-mount M4 BOA systems. If your G3 Guide uses a left-side side-mount, you need the M4L left-turn kit instead. For earlier Guide BOA, Headwaters BOA, or second-generation RiverTek BOA boots, Simms specifies the M2 kit. The G4 BOA boot requires its own dedicated G4 replacement kit.
Check the tongue label inside your Simms boot — it lists your size and BOA generation. S/M lace length is 130 cm and fits boot sizes 7 through 11. L/XL lace length is 150 cm and fits boot sizes 12 through 14. Ordering the correct length matters because an overly long lace creates excess bulk under the dial, and a short lace won't reach across the boot. Match the length to your labeled size, not your guess.
No. This standard M4 BOA kit works for tongue-mount and right-side side-mount configurations only. If your G3 Guide BOA has the dial mounted on the left side of the boot, you need the M4L left-turn BOA Replacement Kit. The dial rotation direction differs, so a standard M4 dial on a left-side mount will tighten in the wrong direction. Verify your mount position before ordering to avoid getting the wrong kit on the river.
Yes. Hunt Premium is an authorized Simms dealer, and every repair kit we ship is genuine Simms factory hardware — not aftermarket knockoffs. Authorized dealer status matters on repair parts the same way it matters on a $2,800 scope. You get the correct wire gauge, dial tolerances, and lace lock specifications that match your boot's original system. No gray-market guesswork, no voided warranty concerns on the boot itself.
Hunt Premium offers a 30-day return window on unopened items in original packaging. If you haven't opened the kit and realize you needed the M2 or M3 instead, send it back for a full refund. That said, we'd rather you get it right the first time — check the tongue label inside your boot before ordering. It lists the BOA generation and lace length. If you're unsure after checking, call us and we'll walk you through it.
No. If your tongue label reads BOA M2 Reel, you need the M2 BOA Field Repair Kit, not this M4 version. The M2 designation refers to a different dial generation with a smaller lace spool and different wire gauge. This M4 kit is only compatible with boots that came factory-equipped with the M4 dial system — specifically the Simms G3 Guide BOA in Vibram and felt. Using an M4 kit on an M2 boot will result in incorrect lace routing and poor tension.
SKU: 22-14452-000-2030L Categories: , Brand:

The Hunt Premium Promise

Every product we carry earns its spot — or it doesn't make the cut.

Authorized Dealer Full manufacturer warranty honored on every product. No gray market, no exceptions.
Free Shipping Ships free with fully insured packaging on every order.
30-Day Returns Return within 30 days in original packaging for a full refund — no questions asked.

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About simms fishing Accessories

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