Check out the range of Primary Driveline parts available in this section for your Harley Davidson & Custom Motorcycles
Worldwide Shipping
We offer shipping to most countries. Simply select your country once you have added items to your basket and you'll be shown an instant price for shipping without having to advance in to the check out process.
200,000+ Parts & Accessories
Our catalogue has grown extensively over the years and we now source a huge range of parts and accessories from a number of distributors from round the world.
Order Online Or By Phone
We're more than happy to have customers order which ever way they prefer. If you'd like to discuss anything over the phone prior to ordering we'd be delighted to help you.
Simple Exchange Or Refund Policy
We know when customers receive their orders there is always the possibility of needing to exchange or return items for a refund. Rest assured if you need to, we make it simple. See T&C's for more details.
Price Match Promise
We offer a price match promise on all items we sell. Use the "Seen it cheaper?" option found on the product pages to request a price match.
Check out the range of Primary Driveline parts available in this section for your Harley Davidson & Custom Motorcycles
vehicle specificDOSS Primary Chain Adjuster Kit For Harley Davidson 1977-1985 Sportster Motorcycles (71216)
vehicle specificDOSS Primary Chain Adjuster Kit For Harley Davidson 1991-2003 Sportster Motorcycles (25-026)
universal fitmentDOSS Primary Case Saver For Harley Davidson 1965-1984 Big Twin Motorcycles (25-308)
vehicle specificDOSS Shaft Extension 1/2 Inch For 1991-2006 Harley Davidson Motorcycles (15-090)
vehicle specificDOSS Primary Chain Tensioner Kit For Harley Davidson 1985-2000 Big Twin Motorcycles (64040)
vehicle specificDOSS Standard Nut For Compensating Sprocket On 1991-2006 Harley Davidson Motorcycles (7305)
vehicle specificDOSS 1/2 Inch Nut For Compensating Sprocket on 1991-2006 Harley Davidson Motorcycles (15-043)
vehicle specificDOSS Lock Tab Primary Chain Tensioner Plate For Harley Davidson 1965-2000 Big Twin Motorcycles (70-215)
vehicle specificDOSS Replacement Primary Chain Lining For Harley Davidson 1965-2000 Big Twin Motorcycles (20-126)
vehicle specificDrag Specialties Primary Chain Adjuster For 1990-2003 HD Sportster Models (78050022)
vehicle specificDOSS Hydraulic Chain Tensioner For Harley Davidson 1965-2000 Big Twin Motorcycles (64028)
universal fitmentDoss Transmission Sprocket Cover in Chrome Finish For 1991-2003 XL Models (74672)
vehicle specificDOSS Primary Chain Adjuster Kit For Harley Davidson 2004-2017 Sportster Motorcycles (25-049)
universal fitmentBDL Front Pulley Nut, Hex, Splined Shaft For 1955-2006 Big Twin Motorcycles (Excludes 2006 Dyna) (FHN-2)
universal fitmentColony Acorn Motor Sprocket Nut For 1955-2006 Big Twin Motorcycles (Excluding 2006 Dyna) (7816-1)
vehicle specificDOSS Replacement Primary Chain Lining For Harley Davidson 2001-2006 Big Twin Motorcycles (25-024)
vehicle specificDOSS Replacement Nylon Lining For Hydraulic Chain Tensioner ARM018805 (64029)
vehicle specificDOSS Spring Cover Assembly For 1991-2006 Big Twin Motorcycles (15-033)
vehicle specificDrag Specialties Primary Chain Adjuster For 2004-2022 HD Sportster Models (G15-0941K)
vehicle specificColony Motor Sprocket Nut For Harley Davidson 1993-2020 Sportster Motorcycles (Excludes 2008-2012 XR1200) (2285-1)
vehicle specificDOSS Shaft Extension Standard For 1970-1990 Shovel & Softail Motorcycles (15-024)
vehicle specificDrag Specialties Primary Chain Tensioner Kit For 2001-2006 HD Big Twin Models (15-0937K)
vehicle specificDrag Specialties Compensating Sprocket Nut For 1991-2006 HD Big Twin Models (346216)
universal fitmentFree Spirits Triumph Classic & Cruiser Sprocket Cover Contrast Cut (307514KS)
universal fitmentFree Spirits Sprocket Covers in Black Finish For Indian Scout Models (107514)
vehicle specificDOSS Spring Cover Assembly For 1970-0982 FLH & 1982-1983 FXR Motorcycles (19-0119)
vehicle specificJoker Machine Sprocket Cover In Black For Harley Davidson 2004-2020 Sportster Models (10-810B)
vehicle specificDoss Transmission Sprocket Cover In Chrome Finish For 1982-1990 XL, 1981 XLS Models (11-201C)
vehicle specificDOSS Outer Plate For Primary Chain Tensioner For Harley Davidson 1965-2000 Big Twin Motorcycles (71056)
universal fitmentBDL EVO-9S (3 Inch) Open Primary Belt Drive in Polished Finish For 1990-2006 Softail (EVO-9S)
vehicle specificDoss Transmission Sprocket Cover in Polished Finish For 1971-1976 XL Kick & E-Start Models (30-522)
vehicle specificDOSS Replacement Adjustment Screw For Primary Chain Adjuster For Harley Davidson 1977-1990 Sportster Motorycles (A-3250)
vehicle specificKuryakyn Aztec Primary Cover In Chrome Finish For Indian 2014-2020 Motorcycles (5705)
vehicle specificJIMS OEM Motor Sprocket Nut For Harley Davidson 1955-1970 FL Motorcycles Without Compensating Sprocket (24003-55)
universal fitmentColony Motor Sprocket Side Nut For 1929-1973 45 Inch Side Valve (2289-1)
vehicle specificDrag Specialties Chain Tensioner Mount For 1965-1999 HD Big Twin Models (18120-BX-LB1)
universal fitmentEMD Ribber Primary Cover in Black Finish For 2017-2023 M8 (Excluding Models With Mid Controls) Models (PCM8/S/R/B)
vehicle specificColony Motor Sprocket Nut For Harley Davidson 1955-1970 FL Motorcycles Without Compensating Sprocket (7826-1)
universal fitmentBDL Washer For Spline Motor Sprocket Nut For 1955-2006 Big Twin Motorcycles (Excludes 2006 Dyna) (WA-2)
universal fitmentDoss Transmission Sprocket Cover in Chrome Finish For 1971-1976 XL Kick & E-Start Models (43-0109)
vehicle specificDOSS Motor Sprocket Nut For Harley Davidson 1991-1992 Sportster Motorcycles (7328**)
vehicle specificDOSS Motor Sprocket Nut For Harley Davidson 1955-1970 FL Motorcycles Without Compensating Sprocket (A-24003-55)
vehicle specificDrag Specialties Sprocket Cover in Polished Finish For 1986-1990 XL Models (26-0406)
vehicle specificEMD Cover Sprocket in Raw Finish For 2004-2022 XL Models (SCXLI/R/R)
vehicle specificDOSS Replacement Retainer Only For Primary Chain Adjusters For Harley Davidson 1958-1980 Sportster Motorcycles (70606A)
universal fitmentBDL TF-2000 (3-3/8 Inch) Open Primary Belt Drive For Softail 1990-2006 (ARM586815)
vehicle specificDoss Primary Carriage Bolt For Chain Tensioner For 1971-2000 Big Twins (Excluding 1965-1984 FL,FLH) (19-235)
vehicle specificDOSS Primary Chain Tensioner Mount Kit For Harley Davidson 1965-2000 Big Twin Motorcycles (25-015A)
vehicle specificDOSS Primary Chain Tensioner Stock Replacement For Harley Davidson 1965-2000 Big Twin Motorcycles (25-014)
vehicle specificDOSS Primary Anchor Plate Kit For Harley Davidson 1965-2000 Big Twin Motorcycles (25-015)