Skip to content
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.

01-04 Yamaha YZ125 YZ 125 58mm 144cc ATHENA Big Bore Cylinder Crank Rebuild Kit

by Athena
Save 23% Save 23%
Original price $1,398.99
Original price $1,398.99 - Original price $1,398.99
Original price $1,398.99
Current price $1,074.44
$1,074.44 - $1,074.44
Current price $1,074.44

P400485100017, WPC125, 5NY-11311-11-00,CBK0014, 4036, k010, 822172,B5009,WB1061,4SS-11311-30-00, 5DH-11400-00-00, 4XM-11631-30-D0,5MV-11111-00-00 5HD-1131D-10-00 5HD-1132D-10-00 5NY-11311-11-00 90116-08394-00 93210-63442-00 90201-080L8-00 90176-08026-00 4XM-11633-10-00 5NY-11611-00-00 5NY-11631-01-A0 5NY-11631-01-B0 5NY-11631-01-C0 5DH-11351-01-00 90116-08318-00 90116-08388-00 99590-10114-00 93310-522P7-00 93310-52238-00 90209-22248-00 3JD-11681-10-00 5MV-11420-00-00 5MV-11410-00-00 5MV-11400-00-00 MV-11651-00-00

Athena 58mm Big Bore Cylinder Kit / Big Bore Complete Motor Rebuild Kit!

This is the best and most reliable rebuild kit on the market!

Fits Yamaha YZ125 2 Stroke Dirt Bikes

Years 2001 2002 2003 2004 ONLY

Give your Yamaha YZ125 a new life with this complete engine rebuild kit! This top-quality kit includes everything you need to breathe powerful, reliable performance back into your 2001-2004 YZ125.

  • Athena 58mm big bore cylinder and piston kit provides OEM-level durability and power
  • Wiseco heavy duty crankshaft assembly with connecting rod and wrist pin bearing to boost engine life
  • Athena Cylinder Head & Dome
  • Athena Power Valve Kit & Cylinder Head Stud Kit
  • Athena Top Kit Gasket Kit
  • Koyo or NTN Main Crank Bearings, Made in Japan
  • Wiseco Complete Bottom End Engine Gasket Kit (Made by Cometic)
  • Wiseco Complete Motor End Seal Kit (Made by Cometic)
  • All parts covered by warranty for peace of mind*

Tired of lackluster performance from your tired, worn-out YZ125 engine? This complete rebuild kit packs a big punch, delivering stronger acceleration, higher revs and improved reliability so you can push your bike to the limit. Installing these premium parts will have your YZ125 running like new again. 

Race-inspired quality plus a warranty you can count on - upgrade your YZ125 today!

BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
5MV-11111-00-00 5HD-1131D-10-00 5HD-1132D-10-00 5NY-11311-11-00 90116-08394-00 93210-63442-00 90201-080L8-00 90176-08026-00 4XM-11633-10-00 5NY-11611-00-00 5NY-11631-01-A0 5NY-11631-01-B0 5NY-11631-01-C0 5DH-11351-01-00 90116-08318-00 90116-08388-00 99590-10114-00 93310-522P7-00 93310-52238-00 90209-22248-00 3JD-11681-10-00 5MV-11420-00-00 5MV-11410-00-00 5MV-11400-00-00 MV-11651-00-00

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare