1. Dirt Bike
    2. Parts
    3. Engine

    1989 Suzuki RM125 Engine

    1989 Suzuki RM125
    Tire Size:
    Front: 80/100-21, Rear: 100/100-18
    Spark Plug:
    B9EGV
    Stock Chain/Belt:
    520x114
    Stock Gearing:
    Front: 13T, Rear: 51T
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    Wiseco
    Pro Lite Piston Kit
    $117.99 - $142.19
    $88.49 - $106.64
    You save up to $35.55 (25%)
    (12)
    Wiseco Pro Lite Piston Kit Available for both two stroke and four stroke bikes, the Wiseco Pro Lite Piston Kit is both a great OEM alternative and an easy way to boost the power. Choose stock bore siz
    Moose Racing Top End Gasket Kit Performance sets designed for a piston replacement Top-end gasket sets include high-performance head, base, intake and exhaust gaskets Cost-effective way to raise c
    Namura Technologies Top End Repair Kit Namura Technologies piston kits are direct replacements for OEM piston with no modifications or dimensional adjustments needed. Combine this with the MOS2 coatin
    All Balls
    Crankshaft Bearing and Seal Kit
    $60.95
    $54.99
    You save $5.96 (10%)
    (4)
    All Balls Crankshaft Bearing and Seal Kit Kits feature Koyo and Nachi precision Japanese crank bearings Crankshaft seals feature a carbon/fluorocarbon pad on the seal lip and stainless
    Hot Rods
    Connecting Rod
    $119.95
    $101.96
    You save $17.99 (15%)
    (0)
    Hot Rods Connecting Rod Affordable premium quality replacement connecting rods Forged from 8620 AISI steel, hardness tested to insure strength and durability AISI carburized crankpi
    Wiseco
    Replacement Ring Set
    $17.29
    $12.96
    You save $4.33 (25%)
    (2)
    Wiseco Replacement Ring Set Wiseco offers a complete range of popular piston models and years for both trail and racing applications Durability, longevity and increased horsepower Each ring set is
    Wiseco
    Top End Bearing
    $16.99
    $12.74
    You save $4.25 (25%)
    (1)
    Wiseco Top End Bearing When you replace your top end a new Top end bearing is a must. With a new Wiseco Top End Bearing it will keep that wrist pin and rod working perfectly when you put it t
    Hammerhead Design...
    Oil Filler Plug
    $24.95
    $22.46
    You save $2.49 (10%)
    (0)
    Hammerhead Designs Oil Filler Plug6061 T-6 Machined Billet Aluminum with an anodized finish and O-ring seal Laser etched Logo adds a nice factory look All models are plug only (No Dipstick) unless n
    Works Connection Oil Filler Plug 6061 T-6 Aluminum with an anodized finish and O-ring seal Adds nice factory look Made in the USA **Note: Honda CRF450R models must order one for crankcase and one fo

    Latest Reviews

    Bryan (Hayden , CO)

    Fit
    Quality
    Installation
    Recommend

    its f****d

    Had my brand new Wiseco top and bottom end put in about a month ago in my 2002 Honda CR250r. Less than 10 hours and changing my fluids twice bottom end seized yet again. Biggest piece of crap I've spent my money on, wouldn't recommend AT ALL.

    randy j. (sand lake, MI)

    Fit
    Quality
    Installation
    Recommend

    flywheel weight

    Works great- just right for the YZ250 for woods riding.

    Curtis (Chesapeake, VA)

    Fit
    Quality
    Installation
    Recommend

    Top end bearing

    Good OEM substitute. Used one on my last top end without issue.

    Curtis (Chesapeake , VA)

    Fit
    Quality
    Installation
    Recommend

    Gasket kit

    Good quality gasket set. Had everything I needed including multiple thickness base gaskets to properly set head space. Would buy again.

    Jim (Sheboygan, WI)

    Fit
    Quality
    Installation
    Recommend

    Shim Kit

    Glad I bought the kit, better than buying individual shims at the Honda shop. Fair price, quick delivery.

    Jake (Colchester, CT)

    Fit
    Quality
    Installation
    Recommend

    Was good...

    Fit great and was an easy installation but blew it first time I took it to the track.

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