Posted by Modulus Arms Product Team on 28th Feb 2025
Router Jig Extreme Tool Kit Guide
Router Jig Extreme Tool Kit Guide
Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. The Router Jig Extreme Tool Kit is Modulus's bundled tooling package for Router Jig Extreme products. It includes a custom SpeedMill and the drill bits listed on the product page. Buyers must select the correct SpeedMill version for their router using the compatibility chart—this is a purchase requirement, not an optional upgrade.
Quick answer: if you already own or plan to buy Router Jig Extreme, the standard tool kit at /router-jig-extreme-tool-kit-w-speedmill/ bundles SpeedMill tooling and drill bits in one product path. Match your router to the chart, check whether Version 4 requires the Large Router Plate, and compare the premium SpeedCoat kit if coated tooling matters to your purchase.
What This Product Is—and What It Is Not
The Router Jig Extreme Tool Kit is a tooling bundle. It is not the jig fixture itself unless you are buying a separate starter bundle elsewhere in the catalog.
| Product | What it provides |
|---|---|
| Router Jig Extreme Tool Kit with SpeedMill | SpeedMill plus listed drill bits |
| Router Jig Extreme SpeedMill standalone | SpeedMill only, no full bit bundle |
| Router Jig Extreme Premium Tool Kit with SpeedCoat | Premium coated SpeedMill plus listed drill bits |
| 80 lower jig fixture products | Separate fixture category at /80-lower-jigs |
This distinction matters because many support questions come from buyers who needed the fixture, the tooling, or both and purchased only one category.
For broader kit terminology, see 80 Lower Jig Kit vs Tool Kit vs Starter Kit. This guide goes deeper on one specific Modulus SKU family.
[DIAGRAM: Purchase path split—jig fixture vs Router Jig Extreme Tool Kit vs standalone SpeedMill vs premium kit.]
What the Standard Tool Kit Includes
The Router Jig Extreme Tool Kit with SpeedMill product page lists:
- Custom SpeedMill (version must be selected to match router)
- 3/8 drill bit
- 21/64 drill bit, described as custom designed for deep hole drilling and chip clearance
- 5/32 drill bit
- Made in USA language on the product page
The product page also states that buyers must select the proper SpeedMill version to correspond with the associated router. That selector requirement appears on both the tool kit and standalone SpeedMill pages.
Modulus tool-kit category copy describes the three drill bits in general product-education terms: one for the pilot hole before milling work begins, one for the safety selector hole, and ones for trigger pin holes. This guide references that product-page framing without turning into an operational instruction sheet.
Current example pricing visible in the Modulus catalog:
| Product | Example list price |
|---|---|
| Router Jig Extreme Tool Kit with SpeedMill | $77.97 |
| Router Jig Extreme SpeedMill standalone | $65.99 |
| Router Jig Extreme Premium Tool Kit with SpeedCoat | $104.38 |
| Large Router Plate | $39.99 |
Prices and stock status can change. Live product pages are authoritative.
SpeedMill Version Selection
SpeedMill version selection is the most important step in the purchase flow.
Modulus sells four SpeedMill versions for Router Jig Extreme:
- Version 1
- Version 2
- Version 3
- Version 4
Buyers must use the compatibility chart on the SpeedMill or tool kit product page to match the exact router make and model. Routers not listed on the chart are not recommended for Router Jig Extreme.
Key support notes from product pages:
- Router Jig Extreme requires a Modulus SpeedMill end mill
- Version 4 routers may require the Large Router Plate
- Unlisted routers should be treated as unsupported until confirmed by Modulus
For deeper size-label education, see:
Standard Tool Kit vs Standalone SpeedMill
Buyers often compare the bundled tool kit with buying SpeedMill alone.
| Purchase path | When it makes sense |
|---|---|
| Tool kit with SpeedMill | You need SpeedMill plus the listed drill bits in one order |
| Standalone SpeedMill | You already own compatible drill bits or need only the end mill holder path |
| Premium tool kit | You want SpeedCoat-coated premium SpeedMill labeling (1A/2B/3C/4D selectors) |
| Replacement end mill later | You already own the SpeedMill holder and need a wear item only |
The standalone Router Jig Extreme SpeedMill page is the compatibility source of truth even if you buy the tool kit first.
Premium Tool Kit Upgrade Path
Modulus also sells the Router Jig Extreme Premium Tool Kit with SpeedCoat.
Premium kit product-page language includes:
- Solid carbide SpeedMill with SpeedCoat coating
- SpeedCoat described as a zirconium-based coating for lubricity and tool life when milling aluminum
- Premium selectors labeled 1A, 2B, 3C, and 4D
- Same drill-bit bundle categories as the standard kit: 3/8, 21/64, and 5/32
- Note that routers needing D/4 SpeedMill may also need the Large Router Base or Large Router Plate
Premium vs standard is a product-path decision, not a separate compatibility system. Both paths require chart-based router matching.
| Factor | Standard tool kit | Premium tool kit |
|---|---|---|
| SpeedMill labeling | Version 1–4 | Premium 1A–4D |
| Coating | Standard product path | SpeedCoat-coated end mill language |
| Drill bits | Included per product page | Included per product page |
| Router matching | Compatibility chart required | Compatibility chart required |
| Large Router Plate | Required for listed Version 4 / 4D paths | Same plate requirement language |
Avoid unsupported universal "best" claims. Compare product-page positioning and verify current pricing before checkout.
Large Router Plate and Full-Size Routers
The tool kit purchase flow often intersects with router form factor questions.
Modulus describes the Large Router Plate as an optional 6061 billet aluminum adapter for full-size and two-handle routers, not standard trim routers. Product pages link Version 4 SpeedMill paths to this accessory.
Suggested full-size router examples on the Large Router Plate page include:
- Craftsman 2767, 27683, 50429
- DeWalt DW616
- Hitachi M12VC
- Porter Cable 8902
- SKIL RT1312-00
Use those models as product-page examples and verify the live chart before ordering. See Large Router Plate Buyer Guide for more detail.
Replacement Parts and Long-Term Support
Tool kit buyers should plan the replacement ecosystem before checkout.
| Need | Product path |
|---|---|
| Replace worn standard cutter | Replacement 5/16 inch End Mill |
| Replace premium coated cutter | Premium Replacement Endmill |
| Add full-size router support | Large Router Plate |
| Buy only the holder path later | Router Jig Extreme SpeedMill |
Modulus replacement pages describe the standard end mill as for Router Jig Extreme SpeedMill only. That exclusivity language matters when comparing third-party end mills.
See 80 Lower Jig Replacement Parts Guide for the full support map.
Buyer Checklist Before Adding the Tool Kit to Cart
- Are you buying for Router Jig Extreme specifically?
- Do you already own the jig fixture, or still need a fixture product from
/80-lower-jigs? - What is your exact router make and model?
- Is that router listed on the SpeedMill compatibility chart?
- Which SpeedMill version or premium 1A/2B/3C/4D label matches the chart?
- Does your router require the Large Router Plate?
- Do you want the standard kit, premium SpeedCoat kit, or standalone SpeedMill?
- Are replacement end mills and the Large Router Plate available if you need them later?
Common Tool Kit Purchase Mistakes
| Mistake | Result | Better approach |
|---|---|---|
| Selecting SpeedMill by router brand only | Wrong version | Match exact model on chart |
| Buying tool kit without owning compatible jig | Incomplete project path | Confirm fixture ownership first |
| Skipping Version 4 plate requirement | Missing adapter hardware | Check plate requirement before checkout |
| Assuming any 5/16 end mill works later | Wrong replacement part | Use listed replacement SKUs |
| Ignoring premium vs standard selector labels | Wrong product variant | Read selector labels carefully |
FAQ
What is included in the Router Jig Extreme Tool Kit?
The standard kit includes a custom SpeedMill plus 3/8, 21/64, and 5/32 drill bits according to the live product page. Buyers must select the SpeedMill version that matches their router.
Do I need to select a SpeedMill version when buying the tool kit?
Yes. Modulus product pages require selecting the proper SpeedMill version that corresponds with the associated router using the compatibility chart.
What is the difference between the standard and premium tool kits?
The standard kit uses Version 1–4 SpeedMill selectors. The premium kit uses 1A/2B/3C/4D selectors and SpeedCoat-coated SpeedMill product language. Both require router chart verification.
When do I need the Large Router Plate with the tool kit?
Modulus product pages state that routers using Version 4 or premium 4D SpeedMill paths may require the Large Router Plate. Verify on the current product page for your router.
Can I buy replacement end mills separately?
Yes. Modulus sells standard and premium replacement end mills for Router Jig Extreme SpeedMill. Use the listed replacement products rather than assuming generic interchangeability.
Related Resources
- Router Jig Extreme Tool Kit with SpeedMill
- Router Jig Extreme SpeedMill
- Router Jig Extreme Premium Tool Kit with SpeedCoat
- 80 Lower Jig Tool Kits
- Modulus Arms Router Jig Extreme Large Router Plate
- SpeedMill Explained
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