13B to 12A Hard Stationary Gear Upgrade

This upgrade is a excellent choice to minimize costs and to obtain the best quality front and rear stationary gears for your 12A engine. Because engines all built prior to 1986, and aspirated engines post 1986 did not use factory hardened gears, they have been known to be weaker and problematic in high rpm applications. Hardened gears were later seen in 13B turbo engines and manual transmission RX8’s. REC offers a unique method to modify factory hard 13B gears turning them into shorter 12A gears.

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We can either modify gears you supply or we can supply brand-new factory hard RX8 gears which already have this modification completed. One benefit to using the RX8 gear is it is already “grooved” and fitted with a multi-orifice bearing. Another good reason to choose this type of gear is there are several different sizes of main bearings available from the factory. This later style gear also uses a threaded locking screw rather than the earlier bearing tab.

This is a "must" for any 12A race engine.

Cost for gear grinding only

List price:  $64.00 per gear
Your price:  $55.00 per gear

Modified New RX8 gear (includes grinding)
Rear gear:

List price:  $235.00
Your price:  $196.00

Front gear:

List price:  $194.00
Your price:  $156.00


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