Honda ATC70 / TRX70 / TRX90 Cam Chain Tensioner 25T Gear Set
Brand-new unbranded cam-chain tensioner service set for compatible Honda horizontal OHC engines using the common 25-tooth guide/oil-pump-drive sprocket family.
Product Details
- Product type: Cam-chain guide / oil-pump-drive sprocket and tensioner service set
- Key sprocket family: Honda 25-tooth cam-chain guide sprocket
- Honda reference family: 14670-GBJ-M30, superseding 14670-035-030
- Engine type: Honda horizontal OHC 4-stroke family
- Condition: Brand new
- Type: Unbranded aftermarket replacement
Honda describes 14670-GBJ-M30 as a 25-tooth cam-chain guide sprocket. Some specialist suppliers also call the same component an oil-pump drive sprocket. This listing uses both terms so customers can identify the part correctly.
Vehicle Compatibility
| Make | Model / Engine | Verified Scope | Notes |
|---|---|---|---|
| Honda | ATC70 | 1973–1985 documented sprocket-family application | OEM/vintage parts catalogues list 14670-GBJ-M30 |
| Honda | TRX70 FourTrax 70 | 1986–1987 | OEM fitment lists the 25T sprocket family |
| Honda | TRX90 / TRX90X | 1990s through modern catalogues | OEM cam-chain diagrams use 14670-GBJ-M30 plus common tensioner parts |
Important Fitment Information
ATV engines share the 25T guide sprocket family, but tensioner revisions differ by year. Compare all supplied pieces before installation.
Do not order by engine capacity or model name alone. Honda used different tensioner rods, springs and spindles across model years even where the 25T guide sprocket is shared.
Before ordering, compare the original sprocket tooth count, centre/thread arrangement, tensioner rod, spring, roller/guide parts and all supplied pieces with the product photographs.
What's Included
Oil-pump/cam-chain guide sprocket and cam-chain tensioner service components as supplied. The exact individual component count could not be independently confirmed from the Shopify export, so the product photographs should be used as the final contents reference.
Installation
These are internal engine timing and lubrication components. Correct cam-chain routing, tensioner assembly and oil-system operation must be confirmed before the engine is run. Professional installation is recommended if the correct Honda small-engine procedure is not known.