Maximize chain speed and overall cutting production on your extreme-displacement chainsaw with the Genuine OEM STIHL 3/8" 8-Tooth Rim Sprocket Kit (Part #1124 007 1025). Designed specifically for high-output 3/8" pitch setups on STIHL's largest powerheads, this floating rim system allows the saw chain to float and self-align naturally with the guide bar groove—dramatically reducing friction, bar wear, and chain stress under heavy load. This complete direct-fit replacement kit contains all key mounting hardware for a fast drive line overhaul.
Why Choose Genuine OEM over Aftermarket? Monster 100cc+ powerhouses like the 084, 088, MS 880, and MS 881 generate immense rotational torque and high RPMs that destroy sub-standard drive parts. Cheap aftermarket rim kits frequently feature soft steel rims that groove rapidly, out-of-spec drums, and weak retaining clips that risk sudden failure under extreme loads. STIHL OEM assemblies guarantee exact dynamic balance, precise needle bearing fitment, and maximum operational safety.
What's Included
- (1) Heavy-Duty Clutch Drum
- (1) Replaceable 3/8" 8-Tooth Rim Sprocket
- (1) Precision Clutch Washer
- (1) Factory E-Clip Retaining Ring
Key Features
- 100% Genuine OEM STIHL Quality: Precision-machined from high-density, heat-treated structural steel alloys built to withstand extreme commercial logging and sawmilling conditions.
- High-Speed 3/8" Pitch 8-Tooth Profile: The larger 8-tooth rim diameter increases top-end chain speed for rapid bucking, cross-cutting, and high-production wood removal on massive engines.
- Self-Aligning Floating Rim: Floating rim design keeps drive links centered in the bar slot, extending both guide bar and chain service life while smoothing out overall cutting operation.
- Cost-Effective Maintenance: Allows you to replace only the worn outer rim sprocket during routine servicing rather than replacing the entire drum unit.
- Complete Direct-Fit Kit: Includes the required drive line washer and retaining clip to ensure a fast, hassle-free installation.
Product Specifications & Compatibility
| Brand / Tier | STIHL® Genuine OEM Component Kit |
| Part Number / SKU | 1124 007 1025 (1124-007-1025 / 11240071025) |
| Chain Pitch / Teeth | 3/8" Standard Pitch | 8-Tooth (8T) Rim |
| System Design | Replaceable Floating Rim Sprocket & Clutch Drum System |
| Kit Contents | Clutch Drum, Rim Sprocket, Clutch Washer, E-Clip |
| Verified Compatible Models | • 084 Series: 084, 084 R, 084 W, 084 RW • 088 Series: 088, 088 R • MS 880 Series: MS 880, MS 880-R • MS 881 Series: MS 881 Magnum, MS 881-R Magnum |
| Note | Needle bearing sold separately. Always inspect bearing during drive overhaul. |
