Kimpex
In stock
Kimpex WS4
$4,845
All-around · kit price for this machine
- Published Grizzly applications
- 31
- Model years
- 2007–2025
Fits Grizzly 700, Grizzly 450, Grizzly 550 and 2 more.
Camso & Kimpex · Authorized dealer
Yamaha Grizzly Track Systems
The Grizzly has published track applications going back to a 1998 600 — twenty-seven model years, behind only the Kodiak and the Rancher for span on this site. It also shares part of its fitment with the Kodiak: Camso publishes several Yamaha applications as one row covering both models, so the same kit genuinely covers two badges. This page is the Grizzly line by displacement, with what is published for each.
- 53
- Published applications
- 3
- Systems that fit
- 1998–2025
- Model years covered
Verified fitment
Which Grizzly trims have published track applications
Read down to your trim, then across to see which systems we can actually supply a kit for. 53 applications across 7 trims, taken from our own catalog rather than from engine size — a machine is on this table because a kit is published for it, not because it looks like one that is.
Two rows are Camso-only: the 600 and the 660 have T4S and X4S applications and no Kimpex WS4. And Camso carries remarks against four Grizzly rows in its application guide — three C, “temporary body parts removal”, and one K, “temporary vehicle modification”, against the 550.
Scroll the table sideways to see every system.
Find your exact Yamaha Grizzly kit
Pick a system, then your year. These are the 3 systems with published Yamaha Grizzly fitment — the finder searches all of Yamaha, so confirm the result names your trim.
WS4
All-Around
$4,845
X4S
All-Around
$5,049
T4S
All-Around
$4,599
Not sure? Call us — we'll point you to the right setup.
The shortlist
The 3 systems with published Grizzly fitment
Coverage first, price second. The counts below are this machine's own published applications, not the system's catalog-wide total, so a system that fits one trim of yours cannot look like one that fits all of them.
Camso
In stock
Camso T4S
$4,599
All-around · kit price for this machine
- Published Grizzly applications
- 11
- Model years
- 1998–2025
Fits Grizzly 700, Grizzly 450, Grizzly 550 and 4 more.
Camso
In stock
Camso X4S
$5,049
All-around · kit price for this machine
- Published Grizzly applications
- 11
- Model years
- 1998–2025
Fits Grizzly 700, Grizzly 450, Grizzly 550 and 4 more.
What the manufacturers publish
Quoted from Camso and Kimpex, not converted or re-measured. The two companies do not measure ground coverage the same way and neither says how, so read those figures against each other with care.
| Specification | Kimpex WS4 | Camso T4S | Camso X4S |
|---|---|---|---|
| Manufacturer rating | ATV only, four seasons | All-terrain, 300 to 1000cc | ATV 300 to 1000cc, side-by-side 400 to 700cc |
| Ground coverage | 1.32 m² (2,045 sq in) flotation surface | approx. 2,000 sq in ground coverage | approx. 2,000 sq in ground coverage |
| Lug height | 25 mm (1 in) front / 32 mm (1.25 in) rear | 1.125 in front / 1.25 in rear | 1.125 in front / 1.25 in rear |
| Speed loss vs tires | 35% | Average about 30%, and up to 50% on some vehicles | Average about 30%, and up to 50% on some vehicles |
| Frame | Triangulated steel, 2.5 in (64 mm) tubing | Carbon steel | Carbon steel |
| Warranty | 1 year, plus 1 additional year on registering the product | 2-year limited, valid when the system is installed by an authorized Camso dealer | 2-year limited, valid when the system is installed by an authorized Camso dealer |
Sources, read 30 August 2026: Kimpex WS4 · Camso T4S · Camso X4S.
- Kimpex WS4: Kimpex publishes 1.5 hours for a first installation and 30 minutes for each subsequent swap, and runs three wheels on the ground with no slider shoe. Like the WSS4 it ships in two bolt-pattern variants — 4/110, 4/115 and 4/137, or 4/156.
- Camso T4S: The T4S and the X4S publish identical track length, width, lug height, ground coverage, frame and sprocket range — verified against both Camso pages. What separates them is the rating: the X4S is also published for side-by-sides from 400 to 700cc, and the T4S is not. Unit weights differ slightly too (T4S 71 lb front / 83.7 lb rear; X4S 72.6 / 79.4).
- Camso X4S: Camso rates the X4S to 700cc on a side-by-side. On a larger machine the 4S1 is the system Camso publishes, not the X4S.
What actually differs
What changes between one Grizzly kit and the next
The track units are the same product on every machine they fit. What is specific to yours is the hardware that attaches them and the gearing that drives them — which is why fitment is published per trim and per year rather than per engine size.
Camso publishes the Grizzly and the Kodiak as one row
Several of Camso’s Yamaha applications are written as a single row covering both models — “400 Kodiak & Grizzly Ultramatic”, “450 i Grizzly & Kodiak 4x4 / Ultramatic / EPS”, “350 i Grizzly / Kodiak”. One kit, one part number, two model families. That is the published basis for the claim, made unsourced on the old version of this page, that the two machines are closely related: it is not our observation about their drivetrains, it is Camso treating them as one fitment problem.
Applications back to 1998, and where they stop
Camso publishes a T4S and an X4S kit for a 1998 Grizzly 600 and a 2002 to 2008 Grizzly 660, with 17-tooth sprockets on both. Neither has a Kimpex application. Going the other way, the 700 runs from 2007 to 2025 on all three systems with 18-tooth sprockets. A quad from the late nineties still having a published kit is worth knowing about before you assume an older machine is out of options. It is not the oldest on the site, though — the Kodiak reaches back to 1993 and the Rancher to 1994.
In use
What Yamaha Grizzly owners run tracks for
Hunting and back-country access
Both manufacturers sell these as four-season systems rather than snow kits. Kimpex lists marshland, mud, sand, dirt road and gravel for the WS4 alongside its snow ratings.
Property work through winter
Kimpex publishes 2,045 square inches of flotation surface for the WS4 against roughly 2,000 square inches of ground coverage for either Camso system — close enough that other things decide it.
Keeping an older machine working
Published Grizzly applications run from a 1998 600 to a 2025 700. An older quad is often still a supported one.
Ownership
Before you order, and after it arrives
What ships, what the install involves, and what you will be buying again in a few seasons.
What arrives, and what else you need
A Camso kit is four track systems plus the mount kit adapted to your machine, on one line. A Kimpex Commander install is separate line items: the track kit, then the adapter, then the anti-rotation hardware.
Bolt pattern decides the kit variant
Kimpex sells the WS4 in two bolt-pattern versions — 4/110, 4/115 and 4/137, or 4/156 — at the same price. Which one you need is a property of your hubs, not a preference.
Installation and warranty
Kimpex publishes 1.5 hours for a first WS4 installation and 30 minutes for each subsequent swap. Camso’s two-year limited warranty is stated as valid when the system is installed by an authorized dealer. Kimpex publishes two different Commander warranty terms — three years on its microsite, one year plus one on registration on its US warranty page.
What you give up
Kimpex publishes 35% speed loss for the WS4; Camso publishes an average of about 30% and up to 50% on some vehicles, and describes the T4S as keeping two thirds of the machine’s original speed.
Wear parts and diagrams
Bearings, hubs, sprockets, tread and tensioners, searchable by the serial number on your unit.
Open parts & service→Moving tracks to another machine
Transfer kits adapt a set you already own to a different chassis. Which parts you need depends on both machines, so check the pairing before you sell the Grizzly.
Open transfer kits→Unresolved fitment
Have your year, trim and VIN ready — on a Grizzly the trim and the model year are what decide the kit, not the engine size.
Ask us about your machine→Questions
Yamaha Grizzly track questions we get asked
We do not know, and the previous version of this page should not have said “roughly 20-30% more”. That number had no source. What the manufacturers do publish is speed loss — 35% for the Kimpex WS4, about 30% on average for Camso — and nothing at all about fuel. If somebody quotes you a fuel figure for tracks, ask where it came from.
For a good part of the range, nothing — Camso publishes them on shared rows. “400 Kodiak & Grizzly Ultramatic”, “450 i Grizzly & Kodiak 4x4” and “350 i Grizzly / Kodiak” are each one application covering both models. Where they diverge is at the ends of the range: the Grizzly has published 550, 600 and 660 applications that the Kodiak does not, and the two 700s are listed separately. The old page answered this with a comparison of features and suspension; the catalog answers it better.
Four, in Camso’s August 2026 guide. Three carry remark C, “temporary body parts removal” — the 350 Grizzly / Bruin and the two shared Kodiak & Grizzly Ultramatic rows. One carries remark K, “temporary vehicle modification”: the 550 Grizzly FI Auto 4x4, 2009 to 2014. Camso does not publish what has to come off or be modified, so we will not describe it. Ask us with your year before ordering one of those.
The old answer here called it “one of the best CVTs for track use” and said Yamaha designed it for heavy work. Neither claim has a published source, so both are gone. What can be said is that Camso and Kimpex both publish applications across the whole Ultramatic-equipped Grizzly range, including the oldest machines on this site, and that both publish a speed loss rather than a drivetrain warning.
Track pages for other quads
Still not sure which one your Grizzly takes?
Have your model year and trim to hand — on this machine those two are what decide the kit. We will tell you what is published for it and what is not.