Muncie M20 Wide Ratio Gear Set for 10 SPLINE INPUT & 1" Cluster Pin GM 4 Speed

Competition Transmissions
(11899)
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US $495.87
ApproximatelyS$ 641.51
Condition:
New
2 available2 sold
Popular item. 2 have already sold.
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Pickup:
Free local pickup from Canyon Country, California, United States.
Shipping:
Free Standard Shipping.
Located in: Canyon Country, California, United States
Delivery:
Estimated between Sat, 6 Dec and Wed, 10 Dec to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Seller pays for return shipping.
Coverage:
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eBay item number:177217743877
Last updated on Nov 24, 2025 01:19:55 SGTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Bundle Description
Cluster 25-22-19-17 using 1" pin
Fitment Type
Direct Replacement
Items Included
Cluster, 1st Gear, 2nd Gear, 3rd Gear, Input shaft 10 spline
Manufacturer Part Number
Muncie Gear Set, Muncie wide ratio gear set, GKM20A
Gear Count
4
Material
Steel
Vintage Part
Yes
Placement on Vehicle
Transmission
Brand
Aftermarket Products
Input Specs
10 Spline Clutch, 21 Gear Teeth Wide Ratio
Type
Gear Set
Interchange Part Number
304580A, GKM20A
Trans Model
Muncie M20 aluminum 4 speed w/ 1" cluster pin
Manufacturer Warranty
1 Year
OE/OEM Part Number
Muncie 4 speed gears, GK-M20A
Country/Region of Manufacture
Unknown
UPC
Does not apply
Category

Item description from the seller

About this seller

Competition Transmissions

99.7% positive feedback•53K items sold

Joined Jan 2002
Usually responds within 24 hours
Welcome to Competition Transmissions' eBay Parts store.Our mission is to provide quality parts, timely shipping, and excellent customer service. We have been in the transmission rebuilding & parts ...
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Detailed Seller Ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

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Seller feedback (11,819)

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  • 5***1 (96)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    High quality replacement parts. Great condition looks great. Comes with everything needed to put it together. Great packaging and fast shipping. Great price for upgraded part. Fast communication and friendly staff. Would do business with this seller again! Thanks for everything. Looks great put together.
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  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    Exactly what I ordered! Arrived fast AND on a Sunday! Seller communicated fast!
  • e***p (1820)- Feedback left by buyer.
    Past month
    Verified purchase
    Very nicely re-worked case half. Especially nice coating on the outside. Great price with shipping. Nicely packaged and fast shipment. I highly recommend this seller
    Transfer Case Front Half NP149 AWD NP3 with UPDATED Bearing Pocket GM 2001-06 (#186743660571)
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