.325" Chainsaw Rim Sprocket 7 Tooth Small 7 Spline – LN11892
Dimensions: od=31.65mm, id=19mm, 6.3mm thick
Professional quality .325" pitch 7-tooth chainsaw rim sprocket designed for chainsaws using a Small 7 Spline (SM7) clutch drum system.
Manufactured from tough, wear-resistant steel for excellent durability, smooth chain operation and reliable power transfer from the chainsaw engine to the saw chain.
The floating rim sprocket design allows the saw chain to naturally align with the guide bar groove, helping provide smoother cutting and more even wear across the chain, sprocket and guide bar.
This .325" 7-tooth Small 7 Spline rim sprocket is commonly used on a wide range of medium-size chainsaws running .325" pitch chain and is an ideal replacement for a worn or damaged drive sprocket.
PRODUCT DETAILS
✅.325" Pitch Rim sprocket
✅7-Tooth Configuration
✅Small 7 Spline (SM7) Fitment
✅Hardened Wear-Resistant Steel
✅Exceptional reliability
✅Professional performance
✅Smoother cutting performance
✅Reduced Chain & Bar Wear
✅Designed to Reduce Uneven Chain & Bar Wear
✅Easy Replacement Rim Design
✅Helps Maintain Correct Chain Alignment
✅Professional Quality Replacement Sprocket
OEM CROSS REFERENCES
• Oregon 11892
• Oregon 11892C
• STIHL 0000 642 1236
• GB GBJ7S7
COMMON CHAINSAW FITMENTS
Suitable for selected chainsaws using a .325" pitch Small 7 Spline (SM7) rim drive system.
Common applications include selected models from:
• HUSQVARNA
• ECHO
• DOLMAR
• PARTNER
• POULAN
• EFCO
• HOMELITE
• JOHN DEERE
• JONSERED
• MAKITA
Selected model applications include:
HUSQVARNA
• Husqvarna 445
• Husqvarna 455 Rancher
DOLMAR
• Dolmar 109
• Dolmar 110
• Dolmar 111
• Dolmar 115
ECHO
• Echo CS-400EVL
• Echo CS-440
• Echo CS-440EVL
• Echo CS-450
• Echo CS-450P
• Echo CS-500P
• Echo CS-510
• Echo CS-550P
• Echo CS-3600
• Echo CS-3700
• Echo CS-3900
• Echo CS-4000
• Echo CS-4200ES
• Echo CS-4400
• Echo CS-4500
• Echo CS-4600
• Echo CS-5000
PARTNER
• Partner 365
• Partner 400
• Partner 405
• Partner 410
• Partner 450
• Partner 460
• Partner 490
• Partner 510
• Partner P400
• Partner P500
• Partner P545
• Partner P5000
• Partner P5100
POULAN
• Poulan 255
• Poulan 285
• Poulan 295
• Poulan 305
• Poulan 325
• Poulan 330
• Poulan 335
• Poulan 336
• Poulan 2500
• Poulan 2600
• Poulan 2750
• Poulan 2775
• Poulan 2900
• Poulan 3050
• Poulan 3300
• Poulan 3350
• Poulan 3450
• Poulan 3500
• Poulan 3700
Plus many other chainsaws fitted with a compatible .325" Small 7 Spline rim drive system.
WHY USE A RIM SPROCKET?
A rim sprocket transfers power from the chainsaw clutch drum to the saw chain.
Unlike a fixed spur sprocket, the replaceable rim can float slightly on the clutch drum spline. This allows the chain to naturally align with the guide bar groove, helping provide smoother operation and more even wear.
A rim sprocket system can provide:
✅ Smoother Chain Operation
✅ Improved Chain Alignment
✅ More Even Sprocket Wear
✅ Reduced Saw Chain Wear
✅ Longer Guide Bar & Drive Component Life
The replaceable design also allows the rim sprocket itself to be changed without replacing the complete clutch drum, provided the existing drum remains serviceable.
WHEN SHOULD I REPLACE MY RIM SPROCKET?
The rim sprocket is a wear component and should be inspected regularly.
As the sprocket wears, grooves can develop where the chain drive links contact the rim. Excessive wear can cause poor chain engagement, increased vibration and premature wear of both the saw chain and guide bar.
For optimum performance, inspect the rim sprocket whenever replacing your saw chain and replace it when excessive wear is visible.
.325" OR 3/8" – CHECK YOUR CHAIN PITCH
This sprocket is specifically designed for .325" pitch chainsaw chain.
Some chainsaw models were manufactured with, or may have subsequently been converted to, different chain pitches.
The drive sprocket, saw chain and guide bar nose sprocket must all use a compatible pitch.
If your chainsaw is currently running 3/8" pitch chain, you will require a compatible 3/8" rim sprocket rather than this .325" version.
SMALL 7 SPLINE – IMPORTANT
This sprocket uses the Small 7 Spline (SM7) configuration.
Do not assume that every 7-spline rim sprocket is the same size. Small 7 Spline and Standard 7 Spline sprockets are different and are not interchangeable.
Before ordering, always compare the replacement sprocket with your existing rim.
IMPORTANT FITMENT INFORMATION
Before ordering, check your existing rim sprocket and confirm:
• Pitch – .325"
• Tooth Count – 7 Tooth
• Spline – Small 7 Spline (SM7)
• Cross Reference – Oregon 11892
Some chainsaw models may have different chain pitches, clutch drums or sprocket configurations depending on model, year and previous modifications.
If you're unsure whether this rim sprocket suits your chainsaw, contact Longer Chainsaws with your chainsaw make and model before ordering.