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CR125 Upper End

Products

FTP Silicone Honda CR125 Upper Radiator Hose
Custom made Honda CR125 radiator hose made of high quality, 3-ply, high temp silicone. Will not harden like standard radiator hoses and resists most chemicals. Two 13mm (1/2") 90 degree elbows into one 16mm (5/8") hose. NOTE: Only use NON-perforated, rolled -edge hose clamps.
 
 
$32.95
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Honda CR125 98-99 Piston Kit
Includes piston, ring, circlips, pin & upper bearing. Click for part numbers.
$96.95
Wiseco 2126CS Ring Alternative
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Honda CR125 2001 Piston Kit
Includes piston, ring, bearing, pin & clips. Click for part numbers.
$93.95
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Honda CR125 2005 Piston Kit (RS125 Alternative)
The 2005 CR125 piston is domed and could be used as an RS125 piston alternative. Includes piston, ring, circlips, pin & upper bearing.
$89.95
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Wiseco Circlips (15mm)
Spare clips for the CR125 piston kits. (2 clips included)
$2.50
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98-01 CR125 Ring - 13121-KZ4-A91
Ring - 13121-KZ4-A91 (supersedes 13121-KZ4-702)
$12.95
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Honda CR125 Upper Piston Pin
13111-KV3-000 (replaces 13111-KZ4-000)
$12.95
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Honda CR125 Upper Rod Bearing, 98-01
$6.95
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Wiseco RS125 Shifter Kart Piston
Wiseco RS125 pistons are an excellent alternative to the factory HRC RS125 piston kits. Electra coated, improved pin bore wear and resistance to micro welding of the ring and ring groove. Complete with ring, two clips and wrist pin.
$142.95
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Wiseco 2126CS Ring (CR125 & RS125)
Replacement ring for Wiseco CR125 & RS125 pistons. Fits the stock CR125 piston with a little filing at the dowel pin groove in the ring.
$14.95
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Honda CR125 1999 Cylinder : 12110-KZ4-J10
Honda CR125 1999 Cylinder : 12110-KZ4-J10
$364.95
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Honda CR125 2001 Cylinder : 12110-KZ4-L10
Honda CR125 2001 Cylinder : 12110-KZ4-L10
$394.95
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Swedetech Prepped "Stock Moto" 2001 CR125 Cylinder
Brand new, prepped by Swedetech Racing Engines. Power valves plugged & blended. In addition, the nut surface is spot faced for a flat surface to reduce the chance of stud failure. Cylinder head, hardware, gasket, piston kit not included.
 
Dyno service now available. The cylinder is installed on a Swedetech engine and dynoed to determine baseline HP. The stock ring that was ran on the dyno is included with the  cylinder.
$875.00
Dyno Service
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Swedetech Prepped "Stock Moto" CR125 99 Cylinder
Brand new, prepped by Swedetech Racing Engines. Power valves plugged & blended. In addition, the nut surface is spot faced for a flat surface to reduce the chance of stud failure (Not shown in current photo). Swedetech valve covers and studs not included.
 
Dyno service now available. The cylinder is installed on a Swedetech engine and dynoed to determine baseline HP. The stock ring that was ran on the dyno is included with the  cylinder.
$471.95
Add Valve Covers
Dyno Service
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CR125 Cylinder Head Studs - 90011-KZ4-700
Stock CR125 cylinder head studs. Sold individually. 5 required.
$4.75
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Honda Cylinder Head Nut - 94050-08000
OEM Honda CR80 or CR125 "Flanged" cylinder head nut with 12mm hex. Sold individually. 5 required.
$0.80
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Honda CR125 Exhaust Manifold Flanged Nut - 94050-06000
OEM exhaust manifold nut. Sold individually. 3 required.
$0.95
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Honda CR125 Exhaust Manifold Stud - 90006-HA8-630
OEM exhaust manifold stud. Sold individually. 3 required.
$2.50
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Honda CR80 / CR125 Cylinder Dowels (10x16mm)
Alignment dowel pins for the CR80 and CR125.
$1.95
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98-99 CR125 Base Gasket (Various thickness)
Used to adjust Squish Clearance.
Set your own price!
The price for this product is not set. You can decide how much you want to pay.
Honda CR125 Base Gasket, 98-99
CR125 98-99 Base Gasket: 12191-KZ4-J00
$8.95
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Honda CR125 Base Gasket, 00-01
$7.95
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Honda CR125 Head Gasket, 98-99
CR125 98-99 Head Gasket: 12251-KZ4-701
$14.95
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Honda CR125 Head Gasket, 00-01
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$9.95
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Honda CR125 98-99 Cylinder Head: 12200-KZ4-J00
Stock OEM head.
$72.95
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Honda CR125 00-01 Cylinder Head : 12200-KZ4-A90
Stock OEM head.
$72.95
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CR125 Power Valve Plug Set - 1999
These are stock plugs....not yet blended to match the exhaust port. Fits 97-99 CR125 cylinders. O-rings included.
$60.00
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SharkShifter Cylinder Power Valve RH side cover 2000 & 2001
SharkShifter Cylinder Power Valve RH side cover 2000 & 2001
2000 & 2001 Cylinder Power Valve Right Hand Cover finished in black anodize includes fasteners.
$14.95
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SRS CR125 Power Valve Plug Set - 2001

Top performing, precision, investment cast power valve plugs for the 2001 CR125 cylinder are now available from SRS Engines.

The shape of the exhaust duct in the 2001 cylinder is critical to power production. The stock 2001 power valve shape sacrifices peak power to give the engine a broad motocross power band that has good response as low as 6000 rpm. Since stock 125 shifter karts operate above11000 rpm most of the time, they can ignore low rpm power in trade for power gains above 11000 rpm.

SRS has identified the duct shapes in the 2001 cylinder that give top level performance in the shifter kart rpm range. These shapes have been captured with computer solid modeling techniques and incorporated into the SRS 2001 CR125 power valve plugs.

A precision investment casting process was used to preserve the shapes of the solid models with a high degree of accuracy in the production power valve plugs. When the plugs are installed in the cylinder and properly blended for smooth transitions between the cylinder and plugs, the maximum power potential of the stock 2001 cylinder can be achieved.

Detailed instructions included.
$169.00
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Replacement O-rings for CR125 Power Valve Plugs - SOLD INDIVIDUALLY
Sold individually.
$1.50
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Swedetech BLENDED & MATCHED CR125 Power Valve Plug Set
These plugs are blended by Swedetech to match the the exhaust port profile. Fits 97-99 CR125 cylinders. O-rings included.
$100.00
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CR125 Joint for Water Hose Connection
O-ring not included.
$39.95
Include O-ring
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Swedetech CR125 Kick-Start Plug
Machined billet aluminum. Gold anodized.
$9.95
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Swedetech CR125 Actuator Plug
Machined billet aluminum.
$14.95
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Bux Circlip Tool - 14mm
Makes installing circlips an ABSOLUTE breeze without any chance of damaging or losing the circlip! For Parilla Leopard, PRD Fireball, HPV, CR80, etc.
$39.95
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Bux Circlip Tool - 15mm
Makes installing circlips an ABSOLUTE breeze without any chance of damaging or losing the circlip! For Rotax Max, Honda CR125, most 125 moto engines, TM K9, TM KZ, ICC, etc.
$39.95
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Parts Unlimited Piston Pin Puller
  • Universal piston pin puller
  • Aids in removing piston pins without damaging the piston
  • Aluminum anodized knurled body with black heat treaded steel rod & pullers
  • Fits 14-17mm piston pins.
  • Works with Honda CR80, CR125, TM ICC, Leopards, Rotax Max, etc.
  • $28.95
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    Motion Pro Torque Wrench Adapter
  • Chrome-vanadium tool steel with hard nickel pewter finish
  • Properly torque two-stroke cylinder base nuts and hard-to-reach fasteners
  • Fits 12 and 14mm nuts and bolts
  • Extends the reach of any 3/8 inch drive torque wrench by 3 inches
  • Chart supplied for torque conversions
  • Check owners manual for proper torque specifications
  • $14.95
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    Flex-Hone Aluminum-Oxide Ball Hone - 48mm
    "Aluminum-oxide", 240 grit flex hones perfect for honing CR80 & CR85 cylinders. This is NOT the more common silicon-carbide hone that is not recommended for cylinder honing.
    $47.95
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    Flex-Hone Aluminum-Oxide Ball Hone - 54mm
    "Aluminum-oxide", 240 grit flex hones perfect for honing 125cc cylinders. This is NOT the more common silicon-carbide hone that is not recommended for cylinder honing. Perfect for Honda CR125's, TM ICC, Rotax Max, etc.
    $47.95
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